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...
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Most reported 2001 Chevrolet Silverado 2500 HD problems