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When DTC P0777 exists for a 6L80 - especially after a refurb or upgrade
U0100 Lost communication with ECM
U0073 CAN Bus Communication
P2544 Transmission Torque Request Signal Message Counter Incorrect
P0700 Transmission Control Module Requested MIL Illumination
P1682 Ignition 1 Switch Circuit 2
Good Morning Yall,
Long time lurker, first time poster as a member, and really appreciate this forum.
Recently the past year I have had some symptoms that didn’t affect the drivability of my 2014 Silverado z71 4x4 5.3, but were very present on a random basis, especially during rain.
Service Stabilitrak, Service Trailer Brake(nothing being towed) popping up the screen, sometimes binging back to back for extended amounts of time near to 30 minutes frequently.
Today the truck would not start, and presented these codes above under a check engine light. The truck started after having the battery disconnected for 15 minutes and has started since so far the previous 12 hours. Also while driving and the typical service notifications, one headlight being out, the truck engages the transmission at a slow roll/acceleration and a very very rough/lurching, almost feels like being rear-ended engagement, it would not engage power steering, and also presented a warning of reduced engine power. Some of these symptoms of course seem to be directly related to the codes, but seem to have progressed as time has gone on.
One issue noticed was a tail light having a small crack, and a sliver of water pooled inside of it. I am unsure if that may be related to the issues present, but I have ordered new lamps.
I have also previously installed a new ground cable from the battery to the block, and also verified the ground on the driver-side front beneath the dash/tweeter. The battery also tested good, so did all of the fuses on the battery side and the box side with the voltmeter. I have not checked the starter or alternator, but they are less than a year old.
Any help or suggestions would be greatly appreciated.
Anyone updated a 2016 Sierra to 2020 Sierra (Bose 7 speaker on both?) I am looking to update my 2016 SLT crew to a 2020 Denali, and want to confirm I am dealing with the same (or similar) animal. The 2016 has PAC AP4-GM61, old school PPI PC450 running 100x4 at 2 ohm, Infinity Kappa 60CSX component front, 62IX 2 way rear, Rockford Fosgate R500X1D running 500 watts at 2 ohms, and a sealed JL 10w1v3-4. Embarrassed to say factory dash speakers, but you do not hear them except for a phone call... Incredible sounding system, but I do not want to have to do it again. Does 2020+ no longer use "MOST" bus communication? Anyone measure wattage from Bose? Any difference between SLT, AT4, and Denali Bose amps? Thanks in advance for your research assistance.
Looking for what else you guys recommend to replace. I Noticed one of my tie rod grease boots was busted, planning to replace both inner and outer tie rods, sway bay end link, sway bar bushings.
Anything else while I’m under there and have to get an alignment? Mileage is at 78,000 miles.
Looking to use MOOG parts. Running 33’s so if anyone else has upgraded to something beefier let me know!
Spent the weekend at a buddy's ranch, and the brake from a dirt bike dented my 2019 Silverado tailgate. I don't want to have to replace the entire tailgate, and I'm very unfamiliar with all the work that can be done now, so I'm wondering if paintless dent repair could fix this? Or if y'all think just the metal piece can be replaced without the entire tailgate needing to be swapped out? Thanks in advance!
By Sir R
Hi , I have a 2015 Chevrolet Silverado High Country and the blend door actuator the one behind the passenger side air vent in the dash has failed I'm getting cold air on the passenger side and hot air on the driver side when the AC is on anybody know how to take the dash apart to fix that?
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