My GMC Sierra is a 2001. Engine is a V-8 Vortex 4.8 Liter. Odometer is approx.30,000 miles. Automatic trans. Truck starts quickly on cold starts, however truck will idle slightly rough when engine warms up. When truck sits for about 15 minutes to 2 hours or so, it takes about 5 to 10 seconds before it starts. If you don't give it gas right away then it may stall, and you can smell a fuel scent after starting. Also, coming off freeway to a stop, sometimes truck may stall but will restart easily. Fuel filter has been replaced and carburater cleaner has been used to correct the problem, with no improvement. Truck has full running power when accelerating. Thanks.......
Oct 1, 2007 at 3:31 PM