There was an electrical short in the transfer case that resulted in vehicle engaging into 2-wheel drive or 4-wheel drive by itself. Dealership replaced the failed part. Also, front driveshaft was loose, causing the front wheel to vibrate/shake.
2003 GMC Sierra 2500 transmission complaints
Page 2 of 2: complaints 11 to 13 of 13, newest first, as owners wrote them.
Vehicle transmission not shifting correctly causing vehicle to accelerate too slowly when pulling out onto highway and not properly downshifting.
The 4-wheel light illuminated on the dash board which indicated the 4 wheel drive was on, when it was not, the vehicle was at the shop on 6 occasions, and the dealer was unable to correct the problem.
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