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Resources for the Repair and Maintenance of your GMC Sonoma

GMC Sonoma Models:

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GMC Sonoma Problems

Brakes -- Verified

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

Engine -- Verified

The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.

Heating & Air Conditioning -- Verified

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.

Exhaust & Emissions -- Verified

A Loose or worn gas cap may cause Check Engine Light to illuminate.

Electrical & Lights -- Verified

The power door locks may stop working in one or more doors due to a failed actuator. Replacement of the failed actuator should correct this concern.

GMC Sonoma Recalls (Recent)

Body, Interior & Misc., August 24, 2000

RepairPal Expert Overview:

The seat belt buckles may not have been properly heat-treated during the manufacturing process. This may cause the buckles not to function correctly during a collision, which may cause injury. Dealers will replace the seat belt buckles.

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Body, Interior & Misc., December 15, 1998

Summary: VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES, 2 AND 4-WHEEL DRIVE. SOLDER JOINTS NEAR THE WIRING HARNESS CONNECTOR CAN CRACK CAUSING THE WINDSHIELD WIPERS TO WORK INTERMITTENTLY.

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Brakes, May 31, 2000

Summary: 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-WHEEL DRIVE CAN MALFUNCTION CAUSING INCREASED STOPPING DISTANCES DURING ABS STOPS WHILE IN THE TWO-WHEEL DRIVE MODE.

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Brakes, December 10, 1999

Summary: THIS IS NOT A SAFETY RECALL IN ACCORDANCE WITH THE SAFETY ACT. HOWEVER, IT IS DEEMED A SAFETY IMPROVEMENT CAMPAIGN BY THE AGENCY. VEHICLE DESCRIPTION: CERTAIN LIGHT DUTY PICKUP TRUCKS, SPORT UTILITY VEHICLES, OR MINIVANS EQUIPPED WITH 3-SENSOR ABS (ANTILOCK BRAKING SYSTEM) EBC4 UNITS.

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Drive Train, October 21, 1994

Summary: SIGNIFICANT WEAR CAN DEVELOP ON THE LOW AND REVERSE CLUTCH PREVENTING THE PARK PAWL FROM ENGAGING. THIS CAN PREVENT A "NO PARK" CONDITION TO OCCUR WHILE THE ENGINE IS RUNNING, CAUSING UNINTENTIONAL MOVEMENT OF THE VEHICLE WITHOUT OPERATOR ACTION. (THE "NO PARK" CONDITION WILL NOT OCCUR WHILE THE ENGINE IS OFF.)

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GMC Sonoma Questions and Answers

scurvy, 1991 GMC Sonoma, 4.3L V6, Hartford, SD

My turn signals won't flash, but the do turn on. I changed the flasher and nothing changed. I see that the hazard lights don't work at all. Does the hazard flasher need to be replaced ...

wbelisle, 1991 GMC Sonoma, 2.5L 4 Cylinder, Kennett, MO

I've checked the fuses on this and all is well on these. Any suggestions for testing purposes?

wbelisle, 1991 GMC Sonoma, 2.5L 4 Cylinder, Kennett, MO

I've replaced the manual transmission with a T5. I've put in Dextron/Equiv. fluid in this, as it is the recommended trans. fluid for it according to my Haynes repair manual... I replaced ...

lmonte54, 1991 GMC Sonoma, San Bernardino, CA

Does anyone know the torque specs for the power steering pump bracket which attaches to engine. It uses 3 bolts, and if tightened too much, it cracks, as it's made of cast aluminum.

wbelisle, 1991 GMC Sonoma, 2.5L 4 Cylinder, Kennett, MO

This just started up on me. I inspected the right rotor and brake pads on the pass. side and the rotor was wore bad on the back side. I put another rotor and brake pads on and I tested it afterward...

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GMC Sonoma Reviews

Bought 1997 Sonoma with 4.3 V6 and 5 speed Trans with 36000 miles on her. Since then I have 0ver 373000 miles on her as of today. She's one tough truck. Since New I have replaced 1 water pump, 1 fuel pump, 1 intake gasket. Believe it or not. I,m still on the original clutch, though She starting to chirp once in a while now. So my baby letting me know its getting to be time for replacement. I'm not afraid to travel anywhere in Her. and as I work out of town we've spent a lot of long hours on the road. Hope to find out just how long she'll keep going. And I'll definitely be buying another GM truck if its got the Vortec Engine.

We have just hit 198,000 miles today with no major problems our 14 years together have been good she had 6 miles when I bought her and yes there has been a lot of parts replaced but she only stranded me once when I put a cheap starter on her. she has only had mobile one oil and will run very ruff if she sits for more than 4 days. any way you do the math she is well worth it, and I don't know what I can replace her with when her wheels fall off ( yes I have replaced all four wheel bearing )

I HAVE A 2000 GMC SONOMA. I'VE REPLACED JUST ABOUT EVERYTHING ON IT.
THIS IS MY SECOND GMC TRUCK BUT I WILL NEVER OWN A THIRD ONE. NOTHING BUT TROUBLE FROM THE BEGINNING. TOTAL COST OF REPAIRS AROUND $15,000. I BOUGHT THE TRUCK NEW FOR $17,000. NEXT PROBLEM THE TRUCK GOES TO JUNK YARD.

I have the same problem, that was addressed some years ago, Without an answer that Question is "I have gas going into my exhaust pipe, I have changed spark plugs and wires, Fuel injector, coil pack, pressure tested cylinder number 4, It still has gas going into the exhaust pipe,on cylinder number 4, Someone told me it may be my fuel regulator any other suggestions , I WANT TO HEAR THEM,HAS ANYONE ELSE HAD THIS PROBLEM ON A 2000 GMC Sonoma 2.2 liter motor??

brought truck into garage for possable work on the ABS and Check engine light. they said it was the abs computer and the tuck computer were not working property. drove truck home aprox. 5 miles. truck sat in driveway 1 month. drove it 5 miles up the road starting loosing power and check engine light started blinking. turned around and drove home, picked up plugs and wires figuring they were bad, pulled them and they looked new, checked fluids at this time and found no Transmition fluid. found the bolts on the transmition pan finger tight figured i was there, so i changed the filter and oil transmition. i changed the oil as well. truck still running like crap, changed the break position sensor. truck atleast stays running and throtles up but no power still, next step changing out the fuel filter. but truck sounds like a moped. at this time any ideas.

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