I have a 2003 GMC Yukon that stalls when idling. The vehicle is a 5.3L Yukon SLT with 189,000 miles. Stalling happens when the vehicle is at rest or while driving with my foot off the accelerator.
1) About 2 years ago, started stalling while coasting to a stop, but restarted easily and ran okay until the next time it stalled
2) Fuel pump and filter replaced by mechanic
3) Problem persisted
4) Replaced fuel pressure regulator and gas cap
5) Problem persisted
6) Car died and ran very roughly when restarted
7) Dealership mechanic could not find problem, but did reprogram the PMC. It ran okay when I drove it home.
8) Problem resumed
9) Determined that the car died when fuel gauge registered one quarter full
10)Wrong fuel pump and gas filter replaced by mechanic
11)Car died because ran out of gas because fuel gauge not registering level properly
12)Mechanic repaired wiring connector to fuel pump.
13)Car died on freeway and would not restart
14)Mechanic replaced cam and crank sensors (code # p0335, p0706, p1571, p1689)
15)Car ran okay for a short while and then started dying more frequently
16)I replaced throttle body with OEM part, replaced PCV valve, cleaned K&N filter and cleaned MAF.
17)Problem persisted
18)Took car to GMC dealership where technician “checked all circuits, checked maf data, ignition data, checked all ground straps and grounds at the back of the block, found the ecm internally failing”. I declined to have the technician do repairs at that time.
19)I purchased refurbished pcm programmed with my VIN and self-installed
20)Problem persists exactly the way it did before the pcm replacement. Car is undriveable. Appears to run lean. When I press the accelerator, car tach goes up and then immediately goes down.
1) About 2 years ago, started stalling while coasting to a stop, but restarted easily and ran okay until the next time it stalled
2) Fuel pump and filter replaced by mechanic
3) Problem persisted
4) Replaced fuel pressure regulator and gas cap
5) Problem persisted
6) Car died and ran very roughly when restarted
7) Dealership mechanic could not find problem, but did reprogram the PMC. It ran okay when I drove it home.
8) Problem resumed
9) Determined that the car died when fuel gauge registered one quarter full
10)Wrong fuel pump and gas filter replaced by mechanic
11)Car died because ran out of gas because fuel gauge not registering level properly
12)Mechanic repaired wiring connector to fuel pump.
13)Car died on freeway and would not restart
14)Mechanic replaced cam and crank sensors (code # p0335, p0706, p1571, p1689)
15)Car ran okay for a short while and then started dying more frequently
16)I replaced throttle body with OEM part, replaced PCV valve, cleaned K&N filter and cleaned MAF.
17)Problem persisted
18)Took car to GMC dealership where technician “checked all circuits, checked maf data, ignition data, checked all ground straps and grounds at the back of the block, found the ecm internally failing”. I declined to have the technician do repairs at that time.
19)I purchased refurbished pcm programmed with my VIN and self-installed
20)Problem persists exactly the way it did before the pcm replacement. Car is undriveable. Appears to run lean. When I press the accelerator, car tach goes up and then immediately goes down.