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2008 Chevrolet Silverado 1500 LTZ 6.0L Engine
Posted to GM Engine on 2/13/2026 12 Replies

Im leaning towards this being a bad pcm, but I wanted some other input in case I missed something. Truck will start fine and run fine, but as it warms up, it starts running rough randomly, then it will go back to running good. When it runs good, all fuel i...

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car Vehicle Data

2008 Chevrolet Silverado 1500 LTZ

VIN 2GCFK19Y88
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedEngine
ConditionsAll the Time
Open Help Request

car Vehicle Data

2008 Chevrolet Silverado 1500 LTZ

VIN 2GCFK19Y88
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedEngine
ConditionsAll the Time