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Duramax slams into gear?
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Duramax slams into gear?
did a fast relearn on it. Jun 22, 2020 · Start diagnosing your Sierra’s hard shifting by checking the transmission fluid level Low Transmission Fluid. 4K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. went back into reverse and nothing just another clunk. It never does this solo and only sometimes when towing. 5 LLY and after sitting for 2 or 3 days went to drive it and it clunks real hard into reverse and drive. Servo seals can be replaced without pulling transmission, or the transmission must be removed for band replacement. To prevent this, make sure that your car is at a complete stop before you shift it into "Park [P] Here is a list of the most prevalent reasons why a car jerks when shifting from park to drive: Insufficient Transmission Fluid Level. This hard erratic shift problem just started a month ago and I had the truck in the shop twice. After this you can push the piston back all the way and replace your pads. 5" Levelling Kit, 20" KMC XD Rockstars w/Pro Comp Metal Mulisha Caps. The dash lights sometimes won't come on for a few seconds, the ecu won't communicate for a few seconds (code reader can't connect either during this). My wife called me today to let me know that when she put the truck into gear it would not drive. Are you an outdoor enthusiast in search of high-quality gear that can withstand the elements? Look no further than MountainWarehouse With a wide range of products designed for. Parks Works, Reverse works but with high pressure (Slams into grear, with a delay), and Drive starts in 2nd and won't shift (Slams into gear with a delay). It will slam into second gear hard enough to throw a can of coke from the holder, rev-up between gears and as well downshift hard with a bump just before stopping. Sometimes the gauges will go haywire and the shifting is acting crazy while its still cold. The factory single-disc torque converter lockup clutch begins to slip. Truck was running and idling but it would not accelate, engine didn't even idle up. Other symptoms include the trans locks into 5th and won't shift, sometimes it's 2nd. The 6 speed is also a clutch to clutch trans which could make it a little clunky, too. I was able to put it in D 3 and 2 and I can feel the tranny go into the gears but I couldn't move much because my other car was in. Threw bunch of codes and I cleared em to try and make it driving home. If you didn't see the offer during the Super Bowl ads, Denny's is offering a free Grand Slam breakfast, normally $5mm. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! 2009 gmc 3500 hd dually 4x4 as i was slowing down for a red light i felt a hard down shift. 06 to 19 Allison 6 speed. With the abilities of a luchador and the frame of a super heavyweight, the WWE Universe shall … A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. com When I tow my 32'5th wheel at times after stopping I start to go and it reaches the rpm to shift it does but just slams into gear I am afaid its going to break something. Hiking is a great way to get exercise and enjoy the outdoors, but it’s important to have the right gear. Other than that all seemed fine. When things are working well, you should rarely notice the transition between gears in an automatic, especially if the transmission. Drove to mechanic at 25-30 mph (trans temp at 165 on dash). My 01 duramax shifts hard on the down shit and when stoping at a light howls and in nutral and slams into gear tike your - Answered by a verified Chevy Mechanic November 21, 2023 by Alex Jones. DTC P0701 is a Type C DTC •A plugged control main filter may cause the DTC to set. May 1, 2018 · CFDWheeler said: They occur in manual mode and also while using cruise control. Threw bunch of codes and I cleared em to try and make it driving home. P0735 is an incorrect 5th gear ratio. Conditions for Clearing the DTC. Kind of slams into gear now. Every time it does not start is is missing the line under the gears. My dad replaced 2 cables, we thought they were just getting gummed up and hard to move. Come join the discussion about modifications, towing, classifieds, … I bought a 2007 cclb "classic" truck a few months ago, it came loaded, 6" lift, 35's banks six gun (speedloader) with PDA, exhaust/intake blah blah blah, has 84000 on … Ripley challenged Morgan for a Women’s World Championship bout at SummerSlam, and Morgan accepted. Sometimes when the drive-train is cold and other times when you have been driving on the highway. When you increase the power of the Duramax, the stock Allison 1000 transmission begins to slip in 5th gear. Looking for the best camping gear for the whole family? Our comprehensive Camping World gear list has everything you need to get started! From tents to cookware, we’ve got you cove. You'll also have difficulty staying in 4WD. Any other secerts out there. I noticed that when in "R" it was blinking. It will not shift at that time, rpms will go up and sometimes itll slam into gear, sometimes itll just rev up. While driving my 99 Suburban yesterday, the transmission started to Slam into gears as it uposhifted. Average failure mileage is 23,900 miles. Allison transmission has issued a warning about a potential defect in its 3000-4000 series transmissions that may cause the vehicle to abruptly slam into gear. Jan 11, 2010 · I'm having the same problem. Seems like it goes into neutral. I will have to get the reader and clear the codes for it to drive again, although this morning it happened again, cleared the codes and drove Down the street, then it slipped and slammed into first from a stop sign. So I reversed back. Typically happens between 3 and 4. Truck starts and runs great, slams into drive and reverse, stays in 3rd gear, speedometer doesn't work and the gear indicator light isn't working. I've got 4000 miles on my 2018 2500 diesel. In Drive it wont' shift out of 2nd or 3rd (40 MPH). 5 LLY and after sitting for 2 or 3 days went to drive it and it clunks real hard into reverse and drive. Use a digital multimeter to test the voltage output of the throttle position sensor. Oct 27, 2013 · 158 posts · Joined 2013 The trans seems to be a little jerky in between first and second it's fully built idk if it's common or going to hurt anything if it slips a little it seems solid it's like the delay to shift is when it slips nor while it's actually in the gear its self. I turned my tune down to the 2nd position which is a 60hp tune. 2005 Allison Shift Solenoid Problems. Well, first off I'll say that it's around -5 here right now and it's usually right around there. The truck did not code again the entire drive. Known for their high-quality gear and apparel, LBean has been a trusted name in the industry for over a century. I've got 4000 miles on my 2018 2500 diesel. This mode is triggered by anything that could cause severe damage to the transmission, including severe overheating or towing a very heavy load. The TC lockup feels similar to a truck with a TC going out. Open windows are much cheaper than air conditioning, but many houses provide unwanted physics lessons when drafts start slamming doors around. I put the shifter into park and hit the key switch. About 8 months ago I was accelerating while in 5th gear and it felt like it popped into neutral. When things are working well, you should rarely notice the transition between gears in an automatic, especially if the transmission. Built 6spd Allison by Mike L. OD shift is smooth, but too early. I wanted to post what happened in my case with my TCM going bad. After reading several threads I replaced the NSBU switch, it seems. When i take a decently wide left turn like at a medium size intersection when it goes to shift it feels like it goes into neutral then rev up and slam into the next gear. The Road to SummerSlam Kicks into Full Gear on 'SmackDown' A Look at Last Night's 'Raw' The Miz on His WWE 'Legends' Episode: 'I Can't Believe It's My Story' My trans sometimes when shifting from park to Drive, it will clunk when it engages into Drive. Plug the 4-way connector into the generator. Jun 25, 2015 · Step 1 – Check your u-joints. Diagnosing the issue and seeking proper repair can help ensure smooth operation. definetely sounds like its coming from the rear end, doesnt seem to matter if turning or not. HI I bought my old company work truck about 6 months ago5 sierra 1500 extended cab with the 4 About 2 weeks ago I was getting on the freeway and it shifted from 1st then 2nd and then like it was in neutral. Called parts counter and tcm is on national back order. I shut it off and restart. ibew president Sometimes it slams into gear, then the shift indicator will disappear after about 3 seconds and lose all power. Every once in a while I get a hard shift when getting on the freeway at a gradual acceleration all shifts are smooth and then one will Bang into gear. definetely sounds like its coming from the rear end, doesnt seem to matter if turning or not. Put it in drive, and it acts like neutral then slams into gear. But once its warm and you shut the truck off and restart is seems to be fine. This relatively cheap, good looking d. 2003 chevy 2500 4x4 136k miles won't go into gear. If you didn't see the offer during the Super Bowl ads, Denny's is offering a free Grand Slam breakfast, normally $5mm. 2011 gmc 3500 HD crew long 4x4 475,000 miles60 horse shop tune deletedhad a pass thru seal start leakingwent limpnew internal wiring harnessnew nsbunew ignition switchnew fluid and filtersran fine for about 2 monthsnow limp againclearing codes makesunplug tcmreset drivablenow just slips 5th gear. Apr 5, 2011 · AcidAnton Discussion starter. My truck is having issues when I come to a stop, when slowing down or actually stooped it feels like it is searching through the lower gears before it finally slams into first, its been doing it awhile but haven't had the money to work on it due to going to school but finally landed a job and am looking to fix everything I can and this is the first thing that's been worrying me Current condition is Delayed hard shift from park or drive into reverse. Start by removing the nut on it with a 15mm then remove the shift linkage with the arm. No reason GMC built a trk that you cannot service or fill the trans. 18 older clubs Whether you are a seasoned outdoor enthusiast or a begin. 5" Levelling Kit, 20" KMC XD Rockstars w/Pro Comp Metal Mulisha Caps. You could also try to replaced ignition switch underneath steering column S. Sometimes the gauges will go haywire and the shifting is acting crazy while its still cold. I was rolling slightly forward at a crawl and shifted into reverse. Now every time I put the truck in reverse, after a couple seconds it acts as if it drops into neutral or something. 844 Views 3 Replies 4 Participants Last post by dougmac, Jul 22, 2014. transfer case jumping out of gear. A transfer case will fail as a result of low fluid level (caused by leaks), a lack of maintenance, or normal wear and tear. 2011 gmc 3500 HD crew long 4x4 475,000 miles60 horse shop tune deletedhad a pass thru seal start leakingwent limpnew internal wiring harnessnew nsbunew ignition switchnew fluid and filtersran fine for about 2 monthsnow limp againclearing codes makesunplug tcmreset drivablenow just slips 5th gear. 11-16 LML Duramax Powertrain Jump to Latest Follow 17K views 9. Now every time I put the truck in reverse, after a couple seconds it acts as if it drops into neutral or something. Now the truck won't move or go into any gear at all. Unique to the diesel engines offered in the ¾-ton and 1-ton truck segment, the Duramax features induction hardening. Additionally, the parts that go into a rebuilt transmission are typically cheaper than those needed for a brand-new transmission. Strange that this all happened suddenly with no warning signs. DozerTrouble Discussion starter. Well, first off I'll say that it's around -5 here right now and it's usually right around there. Let’s have a detailed discussion Transmission Fluid. Sometimes when the drive-train is cold and other times when you have been driving on the highway. It's like a manual clutch held open too long, engine revs up a bit and SLAM into the next gear. Other than that all seemed fine. This slippage causes the Allison 1000 to go into "fail safe" mode preventing you from getting your Duramax power to the ground. akron canton craigslist personal My truck is having transmission problems. Sports enthusiasts and athletes alike are always on the lookout for high-quality sports gear and equipment. Depending on the age of your tranny and miles, it might be worthwhile to replace the harness and solenoids (A & B, the largest ones are pretty expensive though; smaller ones are in the $16 range/ea) Oct 8, 2011 · Im having a problem when i take left turns from a stop with my truck. Started smelling tranny fluid (like when it gets hot) and when shifting. I just drove my truck from Texas to Oregon and now the truck is having more issues. Also if i put it into 4hi it pops out of gear and back. To determine whether you’re experiencing high engine revs and transmission slipping, you’ll need to pay attention to both of these gauges at once. A bad or failing solenoid may cause the vehicle to experience hard shifting when slowing down or coming to a stop Late Shifting. Jan 6, 2008 · 242 posts · Joined 2006 Im currently having a problem with my allison trans. I noticed that when in "R" it was blinking. Put it in the garage for the night still won't go into reverse cleaned the tran solenoid plug, figured it might of limp tran mode ? Cycled key buncha times. Slips past 5th gear. Average failure mileage is 23,900 miles. Whether you’re an avid hiker, traveler, or adventurer, having reliable gear is essential If you’re an outdoor enthusiast, you’ve likely heard of LBean. This safety recall affects over 2,700 vehicles in the united states and canada. Oct 1, 2014 · My truck is having issues when I come to a stop, when slowing down or actually stooped it feels like it is searching through the lower gears before it finally slams into first, its been doing it awhile but haven't had the money to work on it due to going to school but finally landed a job and am looking to fix everything I can and this is the first thing that's been worrying me. This handy tool can help you accurately determine. In this issue of Keep Those Trannys Rolling, we're going to look at one of the most common problems plaguing Allison's LCT transmission group: inhibited gear ranges or shifts. 10, maybe special order? looking to get $375 for front and rears 2012 GMC Sierra 2500HD LML5 Lift KMC XD Misfits 35"/12 PPEI Autocal DPF Delete. My 2016 Denali HD with Allison transmission is downshifting hard into 1st gear when coming to a complete stop (sorta feels like someone taps the rear end) This … It will slam into second gear hard enough to throw a can of coke from the holder, rev-up between gears and as well downshift hard with a bump just before … When I slow down to stop it seems like it downshifts to first harder than the other gears. Is it a common occurrence with the dsp5 switch, to accidently change levels during a shift; and it confuses the transmission, resulting in the trans reving up, and … 2004 GMC 2500HD LLY Duramax w/ Allison 254,000 miles. Whether you are a seasoned outdoor enthusiast or a begin. Have you ever been on a hike and come across someone wearing the most perfect North Face gear and thought to yourself, “I wish I knew how to shop for the North Face like that perso. DozerTrouble Discussion starter.
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Its howls most noticeably on decelleration, but you can also hear it cruising at a constant speed and very faintly acclerating. Then line pressure builds and TCM senses it and sets the SRI. I tried shutting it off then back on but same thing. When the tranny gets warm it will pause then slam into reverse. 6-liter Duramax diesel engine gets an EPA-estimated 15 MPGs in city driving and 20 MPGs on highway driv. The 35 engines are mated to two totally different CVT variants: 3. These are the GM ATSG 4l60E-4l80E Transmission Diagnostics and Repair "Bibles"worth Downloading into a Folder and then referred to often for access to the"Professional OEM Straight Skinny". My hard shifting and hard TC lockup is irregular and not consistent. Okay so three days ago drove to my girlfriends house perfectly fine, sitting in the cold at high idle, truck three tranny code po700 (tcm requests mil) and po972 (i think - first shift solenoid circuit open) so I replaced internal harness, didn't work. On the LB7 grab a heat gun (heatshrink tubing size not oxy-acetalyne torch) and heat up one of the connectors, the wiggle it out and reheat. I'm having the same problem. try to replace the netural safter switch. I scanned it and got P0700 and P0875. Once in gear though it seems to hold the power just fine. Then in the way home in 2wd it came out a few more times. 06 gmc 2500 had slams into4th w foot on brake Changed C - Answered by a verified GMC Mechanic We use cookies to give you the best possible experience on our website. Then in the way home in 2wd it came out a few more times. Looking to enjoy a summer camping trip but unsure of what Camping World gear to buy? Don’t worry! In this article, we’ll teach you the basics of Camping World gear selection so tha. If I do the same thing in 2nd gear it will take off until I run out of rpms5 LMM Duramax 177,000 miles Sep 16, 2019 · 10 posts · Joined 2016 like I said, there were no current codes using my Autocal. I have read a lot of threads and will try to check module on trans for proper connection. The 2019 Chevy Silverado has been cited for early transmission failure at less than 70,000 miles. This can happen when the fluid becomes too low, causing the clutch and gears to grind due to a lack of lubrication. ikittyyyyy Dec 8, 2008 · The transfer case will switch from 4lo, to 4hi, 2wd, and into neutral. Doesn't do it when putting it into reverse and the issue isn't as bad when I either let it warm up in neutral for a while or back up for a ways before putting it into drive. Nov 15, 2007 · 81 posts · Joined 2007 The trans. Won't Shift Out of Park - ChevroletForum. 5 GMC 2500HD Duramax 6 Crew Cab, Short Bed, 4x4. I was rolling slightly forward at a crawl and shifted into reverse. Kind of slams into gear now. A 150 tune on a stock 5 speed allison is worthless unless your just wanting to play around 1-4th. 5 GMC 2500HD Duramax 6 Crew Cab, Short Bed, 4x4. My truck is having issues when I come to a stop, when slowing down or actually stooped it feels like it is searching through the lower gears before it finally slams into first, its been doing it awhile but haven't had the money to work on it due to going to school but finally landed a job and am looking to fix everything I can and this is the first thing that's been worrying me Current condition is Delayed hard shift from park or drive into reverse. My 2016 Denali HD with Allison transmission is downshifting hard into 1st gear when coming to a complete stop (sorta feels like someone taps the rear end) This … It will slam into second gear hard enough to throw a can of coke from the holder, rev-up between gears and as well downshift hard with a bump just before … When I slow down to stop it seems like it downshifts to first harder than the other gears. This would also explain dark smelly fluid. Oct 1, 2014 · My truck is having issues when I come to a stop, when slowing down or actually stooped it feels like it is searching through the lower gears before it finally slams into first, its been doing it awhile but haven't had the money to work on it due to going to school but finally landed a job and am looking to fix everything I can and this is the first thing that's been worrying me. The truck can "crash into" into first and second gears after a slight hesitation and accelerating at low speeds will cause. The truck just kinda jumps forward. The ECM might be malfunctioning. I was rolling slightly forward at a crawl and shifted into reverse. When it comes to shopping for Columbia clothing outdoor gear, there are a few things you need to keep in mind. did abby eden leave channel 4 When not towing the trailer I can put the banks on speed loader and just hammer on it. Aug 27, 2012 · It always drops out when I'm near stopped, or stopped. a wire shorted to ground. I then bought another switch thinking maybe it. 00 for a harsh shift when my old 95 4L80E still shifts smooth as silk! GM needs to FIX their problem. If I do it right and let the RPMs get to idle at the right time, it'll shift PERFECTLY. I noticed that when in "R" it was blinking. May experience delay or "Hanging" upshifts when not using Tow/Haul. I will have to get the reader and clear the codes for it to drive again, although this morning it happened again, cleared the codes and drove Down the street, then it slipped and slammed into first from a stop sign. So I reversed back. Transmission slips bad, especially at lower speeds. When an Allison transmission won’t shift into gear, it’s often due to issues such as low or degraded transmission fluid, malfunctioning shift solenoids, a damaged valve body, or electronic control module malfunctions. Know my truck won't go into gear sometimes. May 26, 2020 · 2021 2500 GMC Duramax Black Diamond edition 10 Speed Trans Failure, Leaking fluid out of tortue converter cover & low On fluid & cannot fill trans. Also when I come to a stop it wont be in gear then a couple of seconds later it will jump back. Jun 25, 2015 · Step 1 – Check your u-joints. here's what came up: U0100-lost communication with control module P0708-trans range sensor A circuit high input P0894-trans. Today leaving the store I fire up truck, put in reverse, hit gas and got nothing but elevated RPMs and a dash code telling me to put into neutral to reset transmission. Using a long handled ratchet and 24mm, turn the motor over by turning the alternator nut while watching the starter hole to look for a torque converter bolt. My other vehicle is a S64 Skycrane. Larger Dave. Also if i put it into 4hi it pops out of gear and back. Unfortunately, a driver can't. senior softball leagues near me Have you ever been on a hike and come across someone wearing the most perfect North Face gear and thought to yourself, “I wish I knew how to shop for the North Face like that perso. The Road to SummerSlam Kicks into Full Gear on 'SmackDown' A Look at Last Night's 'Raw' The Miz on His WWE 'Legends' Episode: 'I Can't Believe It's My Story' My trans sometimes when shifting from park to Drive, it will clunk when it engages into Drive. This is my first post. It happened to me 2 times yesterday. Shifting into reverse is delayed and also a very hard movement once it shifts. I have asked the dealer to have a mechanic take it home overnight so they can duplicate the problem when they are in the vehicle. Connect the negative lead to the sensor's ground wire. Wouldn't move the indicator on the dash would just flash so changed the nsbu switch and no difference, had the tcm flashed and reprogrammed and still nothing so I changed the ignition switch and the truck then went into gear but took a few. The gear indicator light does not work along with the tach and speedo. " Transmission wont shift into 3rd or overdrive. Jan 27, 2013 · Unhook batteries and take out pass fender liner. When it comes to backcountry camping, having the right gear and equipment is essential for a safe and enjoyable experience. a wire shorted to ground. The first one is by diagnosing with a scan tool. The tranny slams into gear, and wont take off right away. The engine should be fine for a good long time if the tuning is good. 2012 lml 5th gear downshift. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. Conditions for Clearing the DTC. All the gears drive great other than the hard shifts. At the end just put everything back together, press the brake pedal a few times and then and engage/dissengage the parking brake a few times to calibrate itself 3rd One. This safety recall affects over 2,700 vehicles in the united states and canada. Jan 11, 2010 · I'm having the same problem.
Whether you’re a professional athlete or a weekend warrior, having the r. did a fast relearn on it. Other than that all seemed fine. 8K members Hey guys, I have a 2003 Duramax with about 130,000 miles on it in great shape. Have someone slowly press the accelerator pedal while you monitor the multimeter. The truck is shifting hard from drive to reverse and from reverse to drive or just the opposite. I have a 02 with van aaken hot box. rightmove halifax to rent Average failure mileage is 23,900 miles. Alright guys I've got an 04. The truck flares up between shifts especially the 2-3shift and the 4-5 shift. I am out of ideas for external problems, and the valve body didn't seem to have any problems. May 2, 2021 · 2004. Step 2 - Check the transmission slip joint. My transmission started having an intermittent hard or delayed 3-4 shift, delayed shifting into drive, and hard shifting into reverse (but only every other time). I just picked up a 02 with my brother last week. listcrawler sacramento Sometimes it slams into gear, then the shift indicator will disappear after about 3 seconds and lose all power. Allison transmission has issued a warning about a potential defect in its 3000-4000 series transmissions that may cause the vehicle to abruptly slam into gear. But the problem came back. It is all controlled by TCM. e01 f09 maytag washer Parks Works, Reverse works but with high pressure (Slams into grear, with a delay), and Drive starts in 2nd and won't shift (Slams into gear with a delay). Misaligned throttle position sensors and malfunctioning shift solenoids are possible causes. The Australian Open, French Open, Wi. Downshifts OK, but takes more throttle to get it to downshift. Jun 22, 2020 · Start diagnosing your Sierra’s hard shifting by checking the transmission fluid level Low Transmission Fluid.
Oct 18, 2019 · 1) Limp Mode (Allison 1000 Model) The Allison transmission 1000 model has a feature called “limp mode”, in which the transmission locks itself into third gear. Conditions for Clearing the DTC. The 3-4 shift is faster and not as hard but I would not call it correct. Sportchek is a leading retailer in Canada that offers a wide range of sports gear and apparel. 2005 Duramax will not shift out of first gear, when pulling it down into gear it slams in, parking brake light is on ( ebrake is not on) and abs light is on as well. Thanks for any help 2002 GMC Sierra SLT 3500 Dually Duramax/Allison 40' Pace American Gooseneck Enclosed Trailer 2014 Corvette Premier Edition Coupe #331/500 2001 Spec Racer Ford 2013. I wiggled the brakelight switch and it will go into gear. IF the pump seal rings are worn, the converter can drain fluidback into the trans pan& "Converter Drain Back" and it will act as you stated. Dec 8, 2008 · The transfer case will switch from 4lo, to 4hi, 2wd, and into neutral. What it does is make a grinding noise then feels like it goes into neutral, then slams into gear again. It doesn't always do it but it happened 4 times yesterday on a 467 mile trip. jc1843. Sportchek is a leading retailer in Canada that offers a wide range of sports gear and apparel. The engine should be fine for a good long time if the tuning is good. The u-joint is a component in the middle of your truck's drive shaft that allows the drive shaft to flex or rotate, which is based on rough pavement or suspension movement. Parks Works, Reverse works but with high pressure (Slams into grear, with a delay), and Drive starts in 2nd and won't shift (Slams into gear with a delay). If I give it a little gas it slams into gear and. The tranny temp should be around 160 - 180 to get a accurate reading in the hot range. In Drive, I get a nice smooth shift into 1st and a smooth up shift from 1-2. These are 1000 series Allison designs. This hard erratic shift problem just started a month ago and I had the truck in the shop twice. Nov 30, 2013 · Then go to leave. The truck did not code again the entire drive. paul bagley Rebuilt the tranny with new clutches and seals and shes as good as new! 2007. 726 views 1 reply 2 participants last post by Ron Nielson Jan 21, 2021. Dec 8, 2008 · The transfer case will switch from 4lo, to 4hi, 2wd, and into neutral. It will slam into second gear hard enough to throw a can of coke from the holder, rev-up between gears and as well downshift hard with a bump just before stopping. My 2016 Denali HD with Allison transmission is downshifting hard into 1st gear when coming to a complete stop (sorta feels like someone taps the rear end) This is happening is very intermittent and may only happen when the truck is in regen mode (not 100% certain though). It also does it at slow speeds like when I am timing a traffic light with the exhaust brake on and then go to accelerate it slams again. Truck stalls when put in reverse. I would say it's occured less than 10 times but it bugs me. Install the new black wire into cavity "D" of the new 4-way connector. Pull the rear driveshaft and grease the splines inside the slip yoke. Had to be towed to dealer with 1,236 miles due to a "transmission module issue. Strange that this all happened suddenly with no warning signs. The issue with the transmission "slamming" into gear when put in Reverse existed a few years ago when I first purchased the vehicle from its original owner. The truck did not code again the entire drive. 6 Duramax and an Allison 1000. I was leaving for work about 530 so I started my truck in garage (truck not plugged in last night) and warmed it up for 10 min or so. If you are overpowering the trans, it will slip and throw a code-- and be stuck in 3rd gear. so anyways, there has been multiple times when driving that when I stop it seemed to "lunge" maybee like slamming into 1st gear. 4L60E_80E_CODE_BOOK allison 1000 shifting hard. white oblong pill g With the abilities of a luchador and the frame of a super. Dec 8, 2008 · The transfer case will switch from 4lo, to 4hi, 2wd, and into neutral. 18259 posts · Joined 2008 Probably NOT the NSBU switch-- that was a common problem with the 5 speed, but the 6 speed switch is inside the trans, and does not cause problems, like the 5 speed5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! 2009 gmc 3500 hd dually 4x4 as i was slowing down for a red light i felt a hard down shift. I've read every post already out there about my trucks issues and replaced everything but the TCM. DozerTrouble Discussion starter. 4K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. When you start to drive it starts off in 2nd gear I believe and will not shift out. The GM 8L45 eight-speed automatic transmission. The Grand Slam of Curling is one of the most anticipated events in the world of curling. Gonna try changing fluids, filters, spring and pressure switch mentioned by. Truck starts and runs great, slams into drive and reverse, stays in 3rd gear, speedometer doesn't work and the gear indicator light isn't working. When i take a decently wide left turn like at a medium size intersection when it goes to shift it feels like it goes into neutral then rev up and slam into the next gear.