2022 GMC Sierra 1500 service brakes problems

“While the truck was under warranty it would go into limp mode. A dealer said they replaced the valve body but it did not look like anything had been done to it. It didn’t go into limp mode and seemed fine for a couple of months then it went into limp mode again and we took it back to the dealership. The hooked a scanner up and cleared the codes and it worked fine for a couple of more months. (This cycle happened repeatedly until it was out of the warranty.) We finally got our own scanner and cleared the codes like they did at the dealer and it would work fine for a while. Then one day driving at 60-65 mph it locked the rear wheels and we slid off into the ditch. It happened 4 more times before we got it home. (We were driving about 15 mph). We called the dealership and they said they couldn’t do anything since it was out of warranty and it could need a new transmission. It was never right from the time we bought it. The locking brakes could be fatal if it had happened on a busy highway. The first problem we had with it was the front grill flew off. We called the same dealer and they told us we pushed too hard on it closing the hood so they weren’t responsible.…”

“My truck has the same issues for the transmission and engine problems I have taken it to 4 dealerships and they all say the same thing. The first one I spent about 3 hours there and they changed the 20 oil to the 40 oil and said that will fix the issues but it hasn't i called GMC to report this and they sent me to the others but they said it's been looked at and I know one of them didn't do anything to see the issue.Gmc called the other day and I told them I will let the engine locked up or the transmission keep doing the same thing and they'll have to fix the issue then.I do have 109000 miles on it but thus issue has been going on for 4 years they said I have 150000 miles for the issue but I do t think that is right.I paid them cash money for the truck when I bought it”

“Truck did not stop when applying brakes. Message displayed brake system failure and the breaks were spongy. The truck was towed to the dealer and required the master cylinder, gasket, and reservoir to be replaced with 23,403 miles. This appears to be an ongoing issue with GMC Sierra trucks and needs further investigation as this potential could be catastrophic. Also, as this appears to be an ongoing issue, owners should not be responsible for the cost associated with any repairs and should require an immediate recall.”

“Engine failed at high speeds on interstate. When my Truck shut off the steering and braking system went out and getting to shoulder of interstate was difficult with others around me. Express lanes were limited on emergency shoulder therefore my truck was partially on the high speed driving lane. 911 was called out to block freeway lane. Check engine light blinked right when truck shut down.”

“1.)When driving the vehicle it will randomly shutoff while driving with loss of brakes and steering until it will randomly turn back on.The vehicle experiences intermittent electronic and drivability malfunctions. The issue appears to involve one or more vehicle control modules and/or electronic systems. At times, warning lights and system messages appear, and vehicle performance is affected. The vehicle is available for inspection upon request. 2.)These failures create a serious safety risk because they occur without warning while driving. The vehicle may lose normal functionality, display multiple warnings, or behave unpredictably. If this occurs in traffic, at speed, or while maneuvering, it could increase the risk of a crash or leave the vehicle stranded in an unsafe location. Furthermore on 3 separate circumstances I came close to crashing the vehicle putting at risk lives in the vehicle and outside. 3.)The problem is intermittent and has been difficult to reproduce on demand. I have taken the truck to the dealership multiple times. The dealership has stated that because the issue is not actively occurring when they have the vehicle, they have been unable…”

“Recently, I just purchased my vehicle from Wally Edgar Chervolet with no open recalls on the vehicle. As of September 29th, 2025 for my very first oil change on the vehicle I was made aware for 4 OPEN Recalls which was told to me at the time of purchase. The dealership closed the all recalls without actually checking my make the vehicle was safe to drive. The Recall Numbers are: N252510321, N222362040, N212356230, N222357620.”