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1991 GMC Sonoma Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 GMC Sonoma

1991 GMC Sonoma Problems

The Anti-lock brake system (ABS) control unit may fail internally causing the ABS warning light to illuminate.

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.

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.

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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...

ok i have a 2.5L 4 cyl single cab 193HP and this yr model had the option with power steering and no power steering and the one i own didnt get it i want to see if anyone could or know a list of all the parts to need to get to add power steering with in the next coming yr im ordering a 350 small ...

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1991 GMC Sonoma Recalls

VEHICLE DESCRIPTION: CERTAIN 4-WHEEL DRIVE PICKUP TRUCKS AND SPORT UTILITY VEHICLES EQUIPPED WITH ABS (ANTILOCK BRAKING SYSTEM) MANUFACTURED FROM SEPTEMBER 1989 THROUGH AUGUST 1996. UNDER CERTAIN DRIVING CONDITIONS THE SWITCH WHICH SIGNALS THE ABS SYSTEM WHETHER THE VEHICLE IS IN 2-WHEEL OR 4-...

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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.

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