1991 GMC Sonoma Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 GMC Sonoma
1991 GMC Sonoma Problems
The heater core under the right side of the dashboard may leak engine coolant which can puddle on the passenger front floor. The loss of coolant may cause an engine overheating condition. Our technicians tell us that removal of the dash board is necessary to replace the heater on these vehicles.
A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window motor will commonly correct this concern.
1991 GMC Sonoma Questions
i want to make it the "big truck" sound with my little truck for very little to no cost. any ideas? i very much appriciate it guys, THANKS!
started on freeway loss of power. then at stoplight when I gave it gas died. Wouldn't restart unless foot to the floor and then was ruff. I have been thru ignition system all new parts and reset to TDC. It started drove a mile shut it off didn't restart had to tow it home. it smells flood...
1991 GMC Sonoma Recalls
1991 GMC Sonoma Reviews
Good truck have broken it in with 453,000 on it . All original motor 4.3 just keeps going and going. Passes emish with flying colors. Just keep them cool and tuned and run super in it will last for ever.
This truck is dependable for work use for me. I replaced the engine in this and at the same time replaced the transmission with the correct one. The image here is not the same type as mine as mine is a swb with a regular cab. Has a 5 speed transmission with a 2.5L engine in it.