GMC Yukon 2000–2006
Common on this vehicle:Warning lightNoiseLoss of engine power, no accelerationMisfire or rough idleLeakGauge or instrument faultStalls or shuts offDoes not start
Possible causes
10 causes not drawn
- Crankshaft position sensor may work intermittently or fail (8.1L V8) - recall 07V-5218.1L only1
- DTCs P2108, P1516 and U0107 (do not replace the TAC module)1
- P0300 after engine repairs: injector connectors crossed (cylinders 5-7 / 6-8)1
- Oil leak after cold start from frozen PCV system (rear main seal)1
- Rear bank knock sensor corrosion from water intrusion (P0332)4.8L, 5.3L, 6.0L only1
- Slight roughness at idle with no DTCs (possible characteristic)1
- Throttle body carbon build-up: idle surge, reduced engine power, throttle DTCs (high mileage)1
- Unwanted ABS activation at low speed (front wheel speed sensor mounting corrosion)1
- Parking brake linings worn out prematurely, parking brake does not hold (PBR single-shoe drum-in-hat)1500 only1
- Seat: broken1
Causes with no correction stated (19)
Causes the records name for which no check or repair is stated, in a technical document or in a record. Press one for the records that name it.
- Exhaust and emissions
- Exhaust Manifold Bolt: broken (8)Evap Vent Valve: clogged or contaminated (1)Secondary Air Injection Valve: corroded (1)
- Other
- Bolt: broken (2)
- Fuel system
- Fuel Injector: clogged or contaminated, corroded (2)Fuel Tank Cap: loose or misadjusted (1)
- Electrical, wiring and power
- TAC Module: electrical fault, failed (2)Body Control Module: failed (1)Junction Box: failed (1)Starter: failed (1)
- Instruments and lighting
- Ambient Light Sensor: loose or misadjusted (1)Daytime Running Light Bulb: failed (1)Headlight: loose or misadjusted (1)
- Heating and air conditioning
- Blower Motor: failed (1)Blower Motor Control Module: failed (1)
- Transmission and driveline
- Needle Bearing: failed (1)Rear Axle: failed (1)Transmission Seal: failed (1)
- Cooling
- Radiator Seal: failed (1)
The documents say what to doOnly records name itThe size of a node, the width of a link and the numbers are records matching this search, not likelihoods.
FaultCrate・GMC Yukon 2000–2006・Engine
Candidate cause (the documents say what to do)
Increased accelerator pedal effort / throttle body sticks (clean and adjust, do not replace)
Applies to: 4.8L, 5.3L, 6.0L only
The throttle valve may intermittently stick in the closed position. The extra pedal force applied to open it may open the throttle more than intended and accelerate the engine and vehicle more than the driver expects.
The 59 crashes counted generally occurred during close-quarter maneuvers such as pulling into a parking space or inching forward in bumper-to-bumper traffic.
What to do
- The last five digits of the TB part number and the manufacturing date are stamped into the TB mounting flange. The date code has the format 'dddy': day of the year (001 to 365) followed by the last digit of the year (9 = 1999, 0 = 2000).
- VRTC compared opening force measured at the accelerator pedal with force measured directly at the throttle cable crank (TB shaft); this confirmed the TB as the source of atypical stiction and eliminated the throttle cable and pedal linkage.
- VRTC measured the maximum pedal force needed to open the throttle from closed (typically about 5.0 lbf on a normal vehicle) and the force needed to hold it just off closed (typically about 4.5 lbf). The difference between the two is the throttle stiction force.
- A stiction force of about one half (.5) lbf is considered typical; anything greater than .5 lbf is considered atypical.
- The correction named in the subject is to clean the throttle body and adjust the blade.
- Clean the throttle body, adjust the blade and insert plugs.
Caution: Do not replace the throttle body; the reference is bulletin 02-06-04-054B.
What is needed
- Parts and materials
- Specially developed plug (to eliminate the air bypass hole in the throttle valve)
- Labor time
- Not stated
- Special tools
- GM service diagnostic tools (used to adjust the shipping air setscrew)
- Scan tool
- Not stated
Only what the technical documents state. "Not stated" does not mean not needed.
In the records
No record states work done for this cause.
See the evidence (1 technical documents, 3 records)
Passages of the technical documents
Bulletin 02-06-04-054A, which replaces 02-06-04-054, covers increased accelerator pedal effort on 1999-2002 Chevrolet Silverado, Suburban, Tahoe, Avalanche and GMC Sierra, Yukon, XL with the 4.8L or 5.3L V8 engine (RPOs LR4, LM7, L59).
02-06-04-054A; replaces 02-06-04-054; Increased Accelerator Pedal Effort (Clean Throttle Body and Adjust Blade); 1999-2002 Chevrolet Silverado, Suburban, Tahoe, Avalanche, GMC Sierra, Yukon, XL with 4.8L or 5.3L V8 Engine (NIVs V, T, Z -- RPOs LR4, LM7, L59)
General Motors 2003-04-01
Row for 1999-2002 Fullsize Pickups and Utilities: throttle body sticks.
1999-2002 Fullsize Pickups and Utilities – Throttle Body Sticks
General Motors 2003-10-01
The correction named in the subject is to clean the throttle body and adjust the blade.
Increased Accelerator Pedal Effort (Clean Throttle Body and Adjust Blade)
General Motors 2003-04-01
Clean the throttle body, adjust the blade and insert plugs.
Clean throttle body adjust blade and insert plugs
General Motors 2003-10-01
A cause or a result a complaint states is the owner’s view or what a dealer told them, not an established fact.
Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.