GMC Sonoma Repair and Maintenance

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

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GMC Sonoma Problems

The Fuel Pump May Fail Causing the Engine to Stall or Crank Over But Not Start

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.

Instrument Panel Lights Flickering and Exterior Lights Intermittent

The headlight switch used on the GMC Sonoma is known to fail through normal operation. Since the headlight switch is also integrated into the interior lights, a malfunctioning switch can cause issues with interior lights as well.

  • Symptoms of a failed headlight switch include:
  • Headlights and taillights failing to turn on or off
  • Interior lights flicker, or fail to turn on or off
  • Gauge cluster lighting off or flickering with headlights on
  • Parking light malfunctions  

This issue is well known with General Motors Trucks and SUVs, and is solved by testing and, if needed, replacing the headlight/dimmer switch. Bad grounding wires at the tail-lights, and dirty/corroded tow package wires can also lead to some of these issues. 

Loss of One or More HVAC Blower Motor Speeds

The HVAC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block. Our technicians recommend to confirm the resistor is at fault by first checking the operation of the switch.

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GMC Sonoma Questions

The battery warning light on the dash comes on goes out repeatedly. What's causi (1 answer)

The battery light comes on for a few seconds then goes out then comes on then goes out. It just keeps doing it.

truck dies, after battery light comes on all lights buzzers and everything works (1 answer)

won't even try to turn over, if battery gets fully charged and key in on position for about 5 minutes then will start but only will run for a day or two

why does the fuel gauge show low fuel light when tank is almost full? (2 answers)

I changed fuel pump because it stopped working. installed new style ac delco pump assembly. fuel gauge worked just fine before that. new connector and wire splicing is correct. truck engine is running not a good gauge reading

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GMC Sonoma Recalls

Air Bag Labels May Be Incorrect

Vehicles may have an air bag warning label with incorrect statements. This is against the Federal Motor Vehicle Safety Standard. Owners will be sent corrected labels and installation instructions. The recall began June 4, 2004. The GM recall number is 04021.

GM Recalls 2000 Chevrolet S10, GMC Sonoma, Olds Bravada Due to Incorrect Payload Rating

The payload as listed on the vehicle certification label exceeds the actual limitations of the vehicle.  If the weight limitations of the vehicle are exceeded, the vehicle will not operate as designed, and may cause a safety issue. Owners will be sent a revised vehicle certification label that is accurate.

Recall 00V220000
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. THESE VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THE DAYTIME RUNNING LIGHTS BUILT WITH A CANDELA VALUE GREATER THAN 3,000 CANNOT BE MOUNTED HI...

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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 ...
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 wh...
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.

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