Sullyman

My truck went in shop today to replace faulty module for camera system. Service tech advised me once they get module replaced and camera system working they will then address LKA, LDW, Collision Alert, Pedestrian Alert and Auto High Beams (aka Driver Alert 2 option package) failures. Driver Alert 2 failures most likely a result of performed updates. Don’t know about faulty module. It work’s intermittently making me suspect it could be a lose wiring or lose ground issue. Time will tell.

So dropped my Sierra Denali truck off at Montana GMC service center this past week. They gave me a loaner car. Had my truck for 3 days however they did tell me they had an important rush repair that came in so they were pushing the repair of my truck off for a couple days. Called me on the third day and said they tied the service rear camera system issues to a faulty module located in the rear of the cab behind the rear seat. Told me they would have to replace that faulty module first before being able to fix any of the Alert 2 Safety system issues (pedestrian avoidance, collision avoidance, lane departure and auto high beams not working). Said they ordered a replacement module that they would not get in for at least a week. So they told me to come and get my truck and bring back their loaner vehicle and that they would contact me when the module arrives and that they would then arrange to have me bring the truck back to continue the repairs. Never ever experienced anything like this with GM service before. Come get and drive your faulty/defective vehicle and we will arrange to fix it later when the part comes in. Blows my mind. Picked the truck up today. Noticed that the lower plastic side trim panel on the driver’s side of the rear seat was now scratched/damaged. Wasn’t there when I dropped it off. Really, really disappointed in GM and this service center/dealership. Intend on speaking with manager of dealership on Monday. My confidence with this dealership is now at zero. Been a very loyal GM new vehicle purchaser for the past 22 years (14 new GM vehicles in that time frame). Was looking at purchasing a new C8 Corvette. This really has me on the fence about purchasing any further GM vehicles.

Finally was able to get my truck into the Montana GMC Service Department today. Got a loaner vehicle (Chevy Spark). In addition to Safety 2 Alert systems not working they are also going to look at the service rear camera system issues and front parking sensor/blue screen coming on at same time issues. Told me they anticipated having the truck for several days at minimum. Said 13 safety recalls had been performed (and recorded) on the truck prior to my purchasing the truck brand new. Hoping they have fixes for all the issues.

Thanks all for the helpful suggestions and contact info. Will follow up with all. Got in contact with Montana GMC service tech today. They arranged to have me drop off the truck to them for warranty work service. Unfortunately have to wait a week to get it into them. Said they would have truck a minimum of two days and would arrange for a loaner vehicle. In mean time truck problems seem to be getting progressively worse. In addition to Safety 2 Alert systems not working and backup camera system not working (i.e. blue screen with service rear camera system warning, now when I brake and stop (on street at intersection with nothing around, in parking lot with nothing around) the front center parking sensor warning indicator goes all the way to red, driver’s seat vibrates and center screen goes blue. Happens about 50% of the time I stop. There is nothing obscuring or near the front parking sensors. Hopefully they get it all figured out.

Thanks Theweavman for the heads up to contact GM Customers Relations. Hopefully they can help make things responsive to my situation. I contacted the Montana GMC service shop yesterday. Spoke with a different service Tech who acknowledged and recalled the initial diagnosing of faults for my truck, now coming up on two weeks ago. The Tech advised he was off of work and out of town for the past 5 days so he would have to check back into his emails to see if GMC engineers responded to their request for help/guidance fixing my truck. Said he would call me back after he checked emails. Never heard back from him. Looks like I am going to have to make the 60 mile round trip to see them in person to see if I can get some movement out of them or instill some interest in them trying to fix the truck. Guess I was right to be a bit apprehensive as to how repairs would proceed given the first thing they asked me when I contacted them about the problems was if I purchased the truck through their dealership. I guess I’ll just have to see where this goes. Very frustrated with GM and this brand new truck that doesn’t work as advertised.

Rocz3cqg. Thank you for your response and very helpful suggestions. I will bring them up with the Montana GMC service techs. Hopefully it will give them some guidance in which direction to proceed for both Tech Package and rear camera system. You are correct that updates and/or TSBs were performed on the truck just prior to my purchasing. I had asked salesman to make sure that any outstanding updates were completed prior to me picking up/purchasing the truck. Salesman advised me their service department had completed the updates, both he and I unaware that those updates resulted in systems functioning issues/problems. I am going to go out and check rear window surround for cracks and leaks. Again Thanks for the guidance and suggestions. When The faulty issues are identified and fixed I will post the corrective actions the service techs completed to get things correct and working.

Purchased 2019 Sierra Denali 1500 6.2L 4WD very late December 2019 from out of state GMC dealership in Washington. I live in Montana. I previously lived in Washington for 18 years before moving to Montana. In the past 12 years I have purchased 7 new GMC Sierra 1500 pickups from the Washington GMC dealership. Have had nothing but good purchase and service experiences with the dealership so I trust them. Anyway purchased the new truck on a Saturday when the dealership service department was closed. Had to drive back to Montana that same weekend because I had to work on Monday. The new Sierra Denali 1500 pickup I was purchasing was my means for getting back to Montana by Monday. While purchasing the truck that Saturday I thoroughly checked out the truck and went through all the functions of the new truck to include the optional Alert 2 package functions (Collision alert, pedestrian alert, lane departure warning, auto high beams, etc), which none of them worked. Salesman I’ve dealt with many times asked if I could bring it in on Monday to their service dept. to get the Alert 2 package problems fixed. Advised him I could not as I needed to be back in Montana on Monday and that the truck was my means to travel back to Montana (additionally if I did not purchase truck that weekend I would lose out on $15,000 in rebates which end by Jan 2nd). So he and I determined taking truck to a local Montana GMC service center for warranty service on the non-working Alert 2 Package functions would be next best course of action (other than not purchasing truck). So bought truck and went back to Montana. Contacted local Montana GMC service center (30 miles from where I live) and made arrangements to get the truck to them. Only down side was they could not get the truck in for service for minimum of 3 weeks. Got it to them more than 10 days ago. They took a day to diagnosed the truck and said they captured several fault codes they did not know how to fix (said these trucks are getting more complex and complicated to fix all the time). Said they reached out to GMC engineers to get guidance on how to fix the truck and would have to wait until GMC engineers got back to them with a fix. Told me to take the truck, that they would contact me and re-schedule an appointment to service the truck when they heard back from the GMC engineers on a fix. In the mean time since then, my touch screen intermittently goes from functioning to displaying a blue screen that advises to service rear camera system. Contacted the local Montana GMC service department by phone who advised (this is 7 working days after they reached out to the GMC engineers) they have not yet heard back from the GMC engineers. Said they would add the new blue screen problem to their list of issues to discuss with the GMC engineers. It has now been 9 working days and I not heard a single word from the local GMC service department about fixing the truck. Truly disappointed in GMC. At minimum reach out to me every so often to let me know that the issues are being worked rather than me having to call and wonder if anything is actually be done or whether I am floating around at the bottom of your vehicles that need to be fixed list and we will get to you when we get to you. During the initial service session the Montana GMC service tech advised that the captured fault codes could possibly be liked to a faulty processor and that they did not know how to fix it. Said the truck had captured numerous fault codes and that truck had numerous issues. Not a confidence builder. Getting tired of lack of communication and waiting on anticipated repair of my brand new GMC pick. Losing confidence in the reliability of the truck. Hope the issues can be repaired correctly and in a timely manner.