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Showing results for tags '8l90e'.
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2015 4.3 to 6.2 swap (l86)/8l90e issues
B M posted a topic in 2014-2019 Engine, Driveline, & ExhaustHi, first time posting on here, I hope I am not bringing up an issue that has been solved or brought up elsewhere. Here we go, I have a 2015 single cab swb 4x4 that came with a 4.3/6l80e, i have swapped this to a 2017 l86/ 8l90e. Truck was fully operational prior to swap no issues, upon completing the mechanical portion of the swap and starting the electrical checkout I have run into some issues. Truck will power up bcm/ gauge cluster with no issue/ lights but I have no ecm activation as fars fuel system coming on or engine rolling over. I am getting the following DTCs: 2535, U0100, 1029( low voltage from fuel system). I have reached out to 8+ different shops for assitance and offered to pay for their time but have not recieved a solution or either not enough experience with newer truck/ motor systems, if there is anyone that has any thoughts/ recommendations/ experience/ solutions on this would be great or a capable shop around north Texas, I am all ears, really excited to figure out what is going and get this on the road. Also everything is 100% factory parts other than texas speed cam and delete kit.
I have not seen a whole lot posted on this and tried to search first. Recently I started noticing a rough shift pattern. I can't tell if its 2-3, 3-4 or 3-4,4-5. It is under light acceleration and been a bit colder. It seems to lurch when making those two shifts. I need to do some driving to test further to see if it progresses through the rest of the shifts or clears up after warmed up. Curious if anyone else has run into this and if there are any troubleshooting steps I can do without any special tools/scanners. I am due for a scheduled visit to the dealer and will have them look into it but found the more information I can provide them the better. Still under powertrain warranty (5 year/100k) I don't have the TCC shudder anymore after the latest fluid change about a year ago but I have gone through a few fluid changes and a TCC replacement. I have read where if this clears up when its not cold that may be expected. I'm wondering if I have a solenoid starting to freeze. Probably not a lot I can do without a scan tool that can read from TCM but thought I'd ask.
6L80e to 8L90e Swap
DenaliX14 posted a topic in 2014-2019 Engine, Driveline, & ExhaustHey Folks, I've been searching all over the NET for info on this situation. I have a 2014 Sierra 1500 Denali 4x4 equipped with a 6.2L and the 6L80e. I'm looking to swap in the 8l90 and would like to know what it will take. The engine set up is capable of producing over 1100 hp however, I'm restricted due to the transmission. Any assistance would be appreciated.
Hello all! First post here! What brought me here was the 8l90 torque converter lockup shudder issue. Most times I'd just take this truck to the dealer and let them sort it out, but as it's out of warranty, this is not something I'd like to pay >$600 to repair (this price was quoted to me for the flush and filter change). After talking to a few service advisors I've found that each of them planned on using a different solution to attempt to alleviate the shudder. The first was going to proceed via one of the bulletins and do a triple fluid swap and filter change, the others were just going to do a standard flush and fluid swap. I plan on owning this vehicle for another few months until the 19's become a little more negotiable but cannot stand to let this shudder go on that long and am a bit worried about destroying the torque converter in the process and washing a whole bunch of parts down into the transmission. So.... my question is if anyone has performed this fluid swap themselves, if it alleviated the issue, and if the filter change is necessary? I saw that many of the Corvette guys were swapping to the Mobil 1 fluid with some success, however, I didn't think this was as much of a fluid performance issue as it was a suspended clutch material / dirty fluid issue. Any help would be greatly appreciated!!!!!!
Hello Thinking about purchasing a new GM truck. I am wondering if anyone is having any problems with their new 1/2 ton trucks. Is GM having any problems with the 6.2 Liter Eco Tec 3 engine or still having some troubles with the new 8L90E Transmission. Other troubles and their solutions would be intresting too. It would be nice to learn in advance what to expect, will it be a wonderful smooth ride. Should I expect a few fixable bumps along the way or am I entering a nightmare ride. Thanks in advance for your input. Success stories are certainly welcomed for a well rounded view.