GS340

Anyone have a heated seat kit they never installed? Part number 17803282 thanks

Still working as of 1/11/2021

FIX DOES NOT WORK 2021 GMC AT4 1500. Purchased 12/26/2020 current mileage: 256 (most of that is driving to and from the dealer. ;( Truck was delivered to the dealer on 12/26/2020... I was there for the PDI and saw it with the wrappers. Truck has been in the shop for 4 days now. The patch/update was applied yesterday and it still does NOT work. Dealer has 2 other trucks with the same issue. One truck is a 2021 Elevation owned by a tech at the dealer. He applied the update to his yesterday and was able to download apps. They took me outside to show it works on his truck and to their surprise it did not. MAJOR WTF!!! So, on the dealer tech's personal truck it worked for ONE day and now back to not working. He had downloaded a few apps and those were on this home screen but the apps do NOT work because there is no internet connection. He said mine was working yesterday afternoon but this morning it's not, same as his. They have another truck on the lot, not purchased, with the same error messages. They haven't touched that one yet. I believe all 3 trucks are recent builds and all were delivered over the past 1 to 2 weeks. The dealer tech's truck has less than 200 miles on it. ***** EDIT ***** Jan 3rd. It started working after running errands today the radio prompted me to accept terms and conditions as I pulled in the driveway. After a few minutes of accepting this and that I checked and the radio had connected to my HOME wifi. I downloaded two apps and configured those. I was able to continue using those apps i assume via the OnStar Wifi connection. Maybe the truck piggy backs off the phone. not sure but it appears to be working for now. Very odd

I spoke to redhead today and they apparently have been getting a lot of calls and/or emails about the new boxes. They feel the new hydroboost is to blame for my current problems and another company shares their thoughts. the new GM gears are not built to very tight tolerances and redhead has identified a few issues and is confused by others. I sent them the link to this thread. Maybe they will post I need to retain a lawyer since GM is refusing to help any further.

I also filed a complaint with NHTSA and was contacted by one of their safety engineers. I sent him photos of the invoices from the repairs. I doubt I'll hear anything from GM.

I sent redhead a message about a solution for 2016 boxes. I'll post if I get a reply

my truck still is not 100% after the second steering box and hydroboost replacement. The steering wheel twitches from a pulse caused by the spool value in the new steering box. As explained to me by the field engineer. This twitch is very annoying to say the least. After owning 18 GM products to include 5 new in the past 4 years this will be my last GM product ever. My truck has other issues besides the steering. I've met with GM regional management and their field engineer and they say the steering issue is normal and I was even told, "I can understand it's a source of annoyance but its normal". My wife who is completely numb to any car related problems notices it. I'm thinking about parking it on my busy street with a big lemon sign. Don't buy GM. I ask for trade assistance with getting something else and was told no, told no to a buy back as well. This truck has been the biggest disappointment ever in the 30 plus cars and trucks I've owned... I would rather have my old dodge K car back then his hunk of garbage. It would be one thing if they would just fix it. Put a 3rd box in it but no.... the lack of empathy and common decency is beyond belief. I'm not asking for a million bucks, I'm asking to have a truck that I doesn't require 15 dealer visits and 2 months in the shop after 10 months of ownership. I asked them to extend the warranty and they said no, everything is no... If anyone at GM see this message. You all really messed up big time.

I have a base truck with steering issuesThe DSA is not the issue. The TSB covers both versions.

They also compared mine to other 2016s on the lot and the twitch as I'm calling it is more severe in mine but considered normal. I can't get over the fact the wheel moves when the brake is applied. I've let folks from work drive it and they all say it's weird or not normal. I've bought 5 GM cars and trucks over the past 4 years, two of which i traded for this 2016. A 2015 Sierra and a 2012 Suburban. The way I have been treated is not a way GM should be running a business. The simple fact is I'm not happy with the repair and the way the truck drives. Period. I asked them to replace the steering box and they said no. GM will never get another dime out of me. I'm trying to figure out how to unload this truck and the other two GM cars I have. Massive loss across the board. What a complete utter nightmare.

Does not drive well. The truck was given back with a hydroboost pulse in the wheel. When you hit the brake the wheel will shutter GM dealer said this is normal and the GM corporate person for my region said it was considered normal. It's a big source of irritation and my truck didn't display this behavior before all this mess. I requested a buy back or special trade deal and GM said no. The truck is repaired so no deals are warranted. It's complete utter bs

Got my truck back today. Magical day 30... the truck appears to drive as new but the hydroboost seems a little twitchy... I could be a little sensitive to the system after all the problems. I'll give it a few days. They ended up replacing the following to restore drivability: Steering box, all steering lines, pump, hydroboost, cooler, pitman arm, front brake calipers, pads, and rotors... apparently the lash adjuster backed out and broke the box, damaged pitman arm, hydroboost or pump failed contaminating the power steering fluid with metal, and the right brake caliper started to drag ruining the pads and rotor. The 2nd dealer's tech definitely professional and I'll mention that to GM during tomorrow's conference call.

Hello... My truck is still at the dealer. They replaced all the components that contain power steering fluid after identifying heavily contaminated power steering fluid. Tech said the fluid was silver... With the new steering box the sloppiness appears to be gone but the issue with the steering wheel wanting to turn right when the brake is applied remains. This occurs while moving and while stationary, at random times. The power steering causes the wheel to twitch while you drive at random times. This is extremely annoying. Dealer is perplexed and they are going to ask GM to get more envolved. Possibly have a GM engineer inspect the truck. They've had 4 different techs drive it and they all say something isn't right. They replaced the front calipers yesterday with no change in behavior. What really irritates me is the fact the entire front of the truck had to be removed to get to the cooler, and lines. The 'fit and finish' is off in how it was reassembled, if that makes sense. Oh well... Very frustrating...

The latest is metal flakes/pieces were found in the steering fluid and all parts that contain fluid have to be replaced. Maybe you all should check your fluid for metal particles. I guess the steering box issues caused parts of the gears to get sucked into the hydroboost pump which resulted in brake issues and steering issues. This issue is extremely serious and I suggest you all check your fluid.

You don't have it. I'm confident base trucks or WT do not have it in any chassis configuration Update: My truck is not driveable. Took it to another dealer today after the dealership I purchased the truck at said take it to another dealer. Called GM to complain and GM denied my buy back because the purchasing dealer said it drives, OK. The brake issue could be a hydrobost pressure variance or some bull crap. Told GM I was taking the truck to another dealer. Got there 45 minutes later, pissed off and frustrated to no end. Drove with a tech and the truck would turn right when applying the brake. He couldn't get past the random turning to focus the the steering slop. He got it back to the service lane and told the service manager I can't drive it home. I was put in another loaner. I can now say I've driven almost every Chevy and GMC product as loaner cars because of steering issues, emissions issues, random electrical issues.... Next time I'm going to record how this truck drives and post it on YouTube,

Got mine back today. Not happy.... the leak is apparently fix and the cause was a damaged o-ring. Damaged while performing the 'D' bulletin. She does drive better but the steering is super light. Doesn't feel right. The steering used to be very confident and now not so much. The dealer said several people drove it and they thought it was ok.

I believe the RPO code for digital assist is NV8

Maybe GM will release bulletin 'E' next month! ?

My 2016 3500 is a base truck with options. Doesn't have digital assist. The problems have nothing to do with digital assist. All of my problems started when I heard a loud 'pop' while turning slowly in a parking lot. Since that time the steering got progressively worse to the point I couldn't deal with it anymore. It took the dealer driving it 50 feet to deem it unsafe to drive. Service lane to bay. After the bulletin that ends in a 'D' was performed the truck felt great for about 60 or 80 miles. Now you can feel the slop occasionally and the steering is leaking. I don't have confidence the current bulletin is the answer

Mine is leaking now after the service bulletin that ends with 'D' was performed. I called the dealer and they said bring it back. Called GM and opened a case.

Mine is the same way. Seems ok then starts acting up.

Hello. I have a 2016 Base model or work truck without the digital assist and I'm having issues as you all have been describing. I picked up my truck yesterday after 11 days waiting for the revised parts to come in. After 80 miles the 'pull' is back. My truck's steering wheel will spin out of my hand when I come to a stop about once every 40 miles. The tech said the truck was unsafe to drive 11 days ago after taking the truck from the service lane to the garage. I was put in a rental car. I put another 60 or 70 miles on the truck today and it's slowly getting worse. When I left the dealer if felt great but that changed over the short period of time. I traded a perfectly good 2015 GMC 1500 in for the GMC 3500 and I'm regretting my decision. I lost my ass on the 1500 and now I'm not sure what to do. I feel the revised parts is not the solution to the problem. I had emissions issues at 500 miles, and other problems. My 1500 never saw the dealer and my 3500 has been in the shop 4 or 5 times now. Dealer has been supporting and I don't fault them. I have 17,000 miles on the truck. Started about 1500 miles ago, the slop, and decided something was definitely wrong after the steering wheel was torn from my hand. Can't be any more obvious For those looking to trade for a truck without digital assist, it's obviously not the digital assist. Don't waste your money.

The issue I was experiencing was not related to the dimmer wheel/adjuster. With the head lights off that adjuster doesn't do anything with regards to adjusting the dash brightness. The problem I was having is in the afternoon getting into the truck the dash LCD would be readable. While driving the dash would slowly dim out to the point you couldn't read anything. Slllloooooooooowwwwwlllllyyyyy fade out over 30 to 45 minutes. The adjuster wheel has nothing to do with it. Turning the headlights on and using the wheel would change the brightness on everything BUT the center LCD. If I turn off the truck and let it sit for while. It would be readable on the next startup and slowly fade again only in the afternoon sunlight. Never at night or early morning. There must have been and issue in the software and the single from the sensor on the dash. It appears the update fixed the issue.

I wanted to let you know the dealer contacted the GM tech line and they sent an update for the cluster. After applying the update the dash is much brighter, doesn't appear to fade out, and is noticeably adjusting as the sun sets. As you drive in areas with lots of trees... Hard to explain but as the trees cast a shadow on the dash sensor you can see the dash dim or brighten. I was sitting in traffic, inching forward, in and out of tree shadows watching it work. Which it never did before. It was always one setting and depending on the amount of sunlight it could wash out the dash. I have the update ID number on the invoice/work order and will post it later You should be happy after the update is applied.

I'm going to ask about it when I take it in for the first oil change. It's so bad in the afternoon you cant read the screen

Has anyone had the issue resolved? Any bulletins?