2003 GMC Sonoma Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 GMC Sonoma

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2003 GMC Sonoma Problems

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.

Driveability Problems Due to Internal Distributor Fault

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.

Check Engine Light Due to Oxygen Sensor Failure

The oxygen sensor can fail causing Check Engine Light illumination and the engine to run rich (burn more fuel than normal).

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2003 GMC Sonoma Questions

2003 GMC Sonoma, engine turns over but will not start. (1 answer)

My truck is a 2003 GMC Sonoma, 2.2L (repairpal did not give me the option of selecting 2.2 liter), standard transmission. When driving the other night, the engine started rocking very hard (I could feel it in the cab) like a cylinder was not firing. The truck also lost power. I was able to pull i...

I get no heat from my heater, it blows cold air...I have replaced the theremosta (3 answers)

When I try to put gas in my truck the pump keeps kicking off.Gas light is on (1 answer)

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2003 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.

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2003 GMC Sonoma Reviews

4.3 v6 is a great engine. drives and handles great. gets 22 mpg at 70mph on interstate.

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