Tl* the contact owns a 2004 gmc sierra 3500. while driving approximately 40 mph, the vehicle became resistant to acceleration. the vehicle was then towed to the dealer where the technicians stated that all eight fuel injectors would need to be replaced. the vehicle was repaired. after the repairs were made, the failure recurred. the contact stated the previous owner of the vehicle experienced the same failure and had the fuel injectors replaced. the vehicle was then traded for another vehicle. the vehicle was not repaired. the approximate failure mileage was 149,411.
Tl*the contact owns a 2004 gmc sierra dormax diesel (na). the contact stated that the fuel injectors produce white smoke. ocassionally, the vehicle becomes difficult to start. the contact serviced the injectors every 10,000 miles, but the failure is persistent. the vehicle was taken to the dealer and they kept replacing the injectors, but to no avail. the failure mileage was 30,000.