Question about 2004 GMC Sierra
I have a 2004 GMC Sierra Truck that misses or hesitates at 40-50 mph. It is not plugs or wires and no codes have popped up? Any idea where to start?
If you are sure its not the plugs or wires, I woud go with the coils next, test each one, if they check out ok then perhaps the injectors.
Posted on Oct 08, 2009
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Posted on Jan 02, 2017
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