1991 GMC Sonoma Repair and Maintenance

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

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

The distributor may develop internal faults. This can cause a rough running engine or stalling condition and the Check Engine Light may or may not illuminate. The distributor should be overhauled or replaced to correct this concern.

A fluid leak may develop from the transmission output shaft seal. This leak may cause the transmission mount to become oil soaked and require replacement of the mount along with the leak repair.

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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...

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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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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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