Began this and it disappeared so trying again! 6 months ago started to have excessive exhaust smoke, especially at idle. Two GM dealers have said it is clearly an injector problem but no warrant coverage as check engine light is not on and required code does not reflect. GM knows this is an issue and extended warranty period by 100K or 1 year. This will runout in 2 weeks. GM dealer suggested putting fuel injector cleaner in gas and drivin...
Problems for specific Chevrolet Silverado 2500 HD years:
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Most reported Chevrolet Silverado 2500 HD problems
A loose or worn gas cap could be cause the Check Engine Light to illuminate.
The fuel pump may fail causing the engine to stall and not restart.
The keyless entry system may stop working. Our technicians tell us the key fobs and keyless entry receiver may need to be replaced to correct this fault.