1991 GMC 1500 Pickup Problems
RepairPal has identified the most common problems with the 1991 GMC 1500 Pickup based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
The alternator may fail causing the battery to go dead, or an abnormal noise may develop. The dash warning light may or may not illuminate. A failed alternator will require replacement.
The air conditioning compressor may develop an abnormal noise and require replacement. We recommend that whenever an AC compressor is being replaced for a noise condition, a filter kit should be installed to prevent any metal particles in the system from damaging the new compressor.
The power door lock actuators may become slow to operate or stop working completely and require replacement.