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GMC 2500 Pickup Problems

Check Engine Light Due to Gas Cap Issue on GMC 2500 Pickup

Problem Description and Possible Solution

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

(5 people reported this problem)

GMC 2500 Pickup Vehicles With This Problem

RepairPal Verified
Average mileage: (–)
Exhaust & Emissions affected: Gasoline
5 model years affected: 1996, 1997, 1998, 1999, more2000
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Brake problem? Or maybe a faulty head gasket cylinder?
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