B Jones

Ok so code is C119e-5a. Range actuator system perfomance. I was able to temporarily clear the code and then as soon as I started truck I turned system to auto. Now able to switch to what ever I want. Also c15ac. There is a open NHTSA bulletin on it: 10187740. Looks like GM is needing more vehicles to go wrong before fixing it... https://m.carcomplaints.com/Chevrolet/Silverado_2500/2020/tsbs/tsb-pie0604.shtml Hope this helps

Same here. Had a 2018 2500 Chev desiel from brand new and not a bean of issue with 4wd even with some harsh plowing. Got 2022 Chev 2500 desiel ltz and got plow on it yesterday. did my driveway for 20 minutes with first use of plow and then went to check on a friend. Got a mile down the road and ding ding ding. Service 4wd. Not even 200kms on the Odo!!! Will scan tommorow and see what codes I'm getting. Very frustrating. I did check underneath and the bottom of the truck is full snow. Wonder if a sensor is frozen or something. Truck was sitting outside at -20c 2 days last week at work and no issues. I have had it on AWD Ford Transits when it's cold, their transfer case doesn't work and you just get RWD until the van warms up. Any others having the same issue would be valuable to know what they find out. Hopefully MAGNA and GM did their homework before putting this in the trucks from the 1500 chassis.