Five problems related to other fuel system have been reported for the 1999 GMC Sierra. The most recently reported issues are listed below.
I was coming to a stop and I lost my brakes I was able to get it stopped. Took it to my mechanic right away and was told the brake line burst and hit my gas line busting it as well. They had the vehicle for over 3 weeks. They repaired the gas line easy enough but the brake line had to be completely replaced.
The contact owns a 1999 GMC Sierra. The contact stated that while driving various speeds, he smelled a strong gasoline odor inside of the vehicle. There was also fuel visible on the ground. The contact inspected the vehicle and noticed that both the fuel and brake lines were completely rusted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the problem. The approximate failure mileage was 71,000.
Truck running sluggish. Difficult to start at times. Hooked up to computer a couple times and showed different sensors bad at different times. Driving to work on 7/7/2005 vehicle suddenly shuts down, able to pull into a resturant parking lot. Problem : fuel pressure regulator clogged ( this is a vaccum line no gas should go through it) causing gas to flow at 60 pounds fuel pressure into the intake manifold causing a fire. Because of this the manifold burned a big hole where #4 cylinder would be located. This happened while I was driving 55 mph down the road & was possibly still burning while I waited in my vehilcle to be picked up. I believe this is a dangerous & should be looked at. My girlfriends nephew found the problem & replaced the intake manifold & fuel pressure regulator. While working on my 99 GMC Sierra her brother who drives a 2000 GMC Sierra describes the same problems I was experiencing & promptly brings over his truck. Upon looking at his fuel pressure regulator it also was full of gas ! his was found earlier without resulting in fire & his fuel pressure regulator was replaced. I contacted GMC & they have given me a hard time, because they wanted me to take it to a GMC garage, I was not going to pay to have it towed there . But plan on stopping there Monday 7/18/05 to show them the parts ( I have the fuel pressure regulator & the intake manifold with the hole burnt through).
Faulty braking system engine noise muffler replace instrument panel fault tire wear transmission automatic shifting rearend noise.
Intermittently engine check and oil lights will illuminate while the vehicle is being driven. Dealer has been notified.
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