GMC Sierra C3 Problems

Find the most common issues based on car owner complaints

Most Common GMC Sierra C3 Problems

The headlight switch used on the GMC Sierra C3 is known to fail through normal operation.
Dealers have been re-flashing the PCM (powertrain control module) on some models, which is covered under the vehicle's emission warranty.
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1 Known GMC Sierra C3 Electrical & Lights Problem

1 Known GMC Sierra C3 Engine Problem

1 Known GMC Sierra C3 Exhaust & Emissions Problem

3 Known GMC Sierra C3 Problems

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