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Chevrolet Silverado 3500 HD Problems

Check Engine Light Due to Gas Cap Issue on Chevrolet Silverado 3500 HD

Problem Description and Possible Solution

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

(8 people reported this problem)

Chevrolet Silverado 3500 HD Vehicles With This Problem

RepairPal Verified
Average mileage: 72,500 (45,000–100,000)
Exhaust & Emissions affected: Gasoline
4 model years affected: 2007, 2008, 2009, 2010
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Viewing 1-2 of 2 comments
Showed up as tighten gas cap but replaced with a original from GM and this was not the problem had to have it smoked and found out it was a cracked fuel pump.
Check engine lite would come on in IL cold weather and go out in TX hot weather. Was told it was a oxygen sensor but turned out to be gas cap???