GMC not starting first try. replaced starter. spark plugs, fuel filter. it turns over but doesnt start, second try turns over and starts no problem. turn off and back on, starts no problem. turn off and let set an hour it has trouble again. could it be fuel pump or injectors?
no heat, is at operating tempiture and all controls are working. coolant is topped up. is there a...
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NO HEAT, IS AT OPERATING TEMPITURE AND ALL CONTROLS ARE WORKING. COOLANT IS TOPPED UP. IS THERE A BLEEDER FOR THE HEATER CORE?