Gmc Sierra turns over but wont run

Asked by Sep 20, 2016 at 03:02 PM about the 1999 GMC Sierra 1500 SLE 4WD Extended Cab LB

Question type: Maintenance & Repair

1 Answer

5,855

Check fuel pressure at fuel rail or spray some brake cleaner in the throttle body, if it runs for a bit, it's your fuel system, if still doesn't start, check for spark at spark plugs.

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