Table 1 shows 17 common power train related problems of the 1999 GMC Sierra. The number one most common problem is related to the automatic transmission (14 problems). The second most common problem is related to the driveshaft (five problems).
1999 GMC Sierra 1500. While driving the truck for about 45 minutes to an hour and if stopping at a stop sign or red light the truck will not shift from first gear to second gear properly. Once the truck does shift it is a very hard shift, and if on wet or slippery surfaces the truck will squall Read details...
The power steering pump driveshaft broke, causing loss of steering & loss of power assisted brakes while towing a 2 horse trailer . On this size vehicle it is extremely difficult to steer or stop even at slow speed. This is the second time this has happened. Read details...
Rear end vibrates due to misalignment of drive shaft to axle. Can't figure out why tranmission shifts hard. Tried replacing seat belt to fix tightening on bump. Read details...