1999 GMC Other Repair Question
Topics covered: Four wheel drive, Fuel pressure, Fuel pressure regulator.
Mileage: No information provided.
Mileage: No information provided.
Asked on February 3, 2008
1999 Other GMC Models Hard Start When Warm
Starts right away when cold. Cranks for several seconds when warm. Back fires every couple of weeks.
Answer
Replied on February 3, 2008
The fuel pressure regulator may be your problem if it is leaking. Sometimes there will be a raw fuel scent at the motor when this happens. The 5.3 motors were affected by this.