GMC Yukon 2000–2006
Common on this vehicle:Warning lightNoiseLeakMisfire or rough idleVibration or shudderAir conditioning or heaterReduced brakingCorrosion or rust
Possible causes
47 causes not drawn
- Violent steering wheel shake or vibration at road speed (brake booster)1
- ABS lamp with DTC C0265 (EBCM motor relay circuit) after EBCM replacement1
- Front floor carpet wet or musty odor (rear door water deflector replacement)2
- Door sags or is hard to open or close (worn or corroded hinge pins and bushings)1
- Broken latch of the rear cupholder in the center console (replace the latch only)1
- Second-row rearward folding head restraint pinch points - recall 02V-2531
- Side access door noise (door check link replacement)1
- Oil leak after cold start from frozen PCV system (rear main seal)3
- Rear bank knock sensor corrosion from water intrusion (P0332)4.8L, 5.3L, 6.0L only3
- Lean hesitation, sag or stumble at -6 to +20°C coolant temperature (PCM reprogram)4.8L, 5.3L, 6.0L only2
- Intake manifold gasket leak (cold idle misfire, lean codes)1
- Higher than expected engine oil consumption (PCV valve replacement)4.8L, 5.3L, 6.0L only1
- P0300 after engine repairs: injector connectors crossed (cylinders 5-7 / 6-8)1
- Slight roughness at idle with no DTCs (possible characteristic)1
- Passlock theft deterrent: starts then stalls / no-start with security lamp4
- Ground Ring Terminal: loose or misadjusted3
- Generator whine in the audio system (new ground for radio and amplifier)1
- Intermittent battery drain from a sticking A/C compressor relay1
- Rear wiper jumps when the fog lamps are turned on (auxiliary ground to rear washer pump)1
- Conversion equipment (not the vehicle as built): Southern Comfort running board courtesy lights overheating - recall 03V-0941
- Trailer brakes applied whenever headlamps or park lamps are on (brake controller jumper harness)1
- Turn signal flashes fast (export flasher relay installed)1
- Engine Control Module: failed1
- Tire recall (not the vehicle as built): Firestone Wilderness LE tread separation - recall 01T-0011500 only4
- Bolt1
- Engine compartment noise with A/C on and A/C inoperative (auxiliary rear A/C: suction hose and compressor)3
- A/C blows warm at extended idle (6.0L: auxiliary electric cooling fan)6.0L only1
- Loss of HVAC mode or temperature control (wiring harness rerouted)1
- Passenger side colder or warmer than the driver's side (HVAC case to cowl seal)1
- Insufficient heat from the rear heater in extreme cold (tee coupling replacement)1
- Encoder Motor: electrical fault, failed2
- Vehicle body tilt or lean left / right (torsion bar front suspension)3
- Aftermarket part (not the vehicle as built): Federal-Mogul National / Carquest replacement wheel hub assembly retention nut - recall 07E-1062WD only1
- Upper control arm bracket alignment (dowel) pin missing at front end alignment1
- Hub Assembly: worn1
- 4L80-E / 4L85-E planetary gear whine in first and second gear2
- 4L60-E slip or no forward engagement right after input housing replacement (service part 17803687)1
- Service 4WD indicator and DTC B2725 (transfer case shift control switch)4WD / AWD only1
- Electronic transfer case stops shifting with no DTC (shift abuse lock out mode, normal)1
- Transfer case speed sensor connector locks bend on disconnect (improved connector)1
- Grind / ratchet noise when shifting into Park in 4LO (characteristic)1
- Transmission: failed2
- OnStar System: failed, software2
- No response when the OnStar button is pressed (DTC B2476): button assembly test values1
- CD Player: software1
- OnStar Hardware: software1
- Purge Solenoid: failed1
Causes with no correction stated (33)
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.
- Audio and telematics
- OnStar Vehicle Integration Unit: failed (4)OnStar Theft Notification: design or manufacturing, software (2)GPS: failed (1)
- Body, doors and interior
- Seat Back: loose or misadjusted (4)Head Restraint: design or manufacturing (2)
- Transmission and driveline
- Transfer Case: failed (4)Locking Rear Differential (2)Rear Axle: failed (2)Axle Differential Seal: leaking (1)Driveshaft (1)
- Electrical, wiring and power
- ATC Fuse: electrical fault, failed (2)Battery: broken (1)Cable: broken (1)Fuse: failed (1)
- Heating and air conditioning
- Air Conditioning Control Head: failed (1)Air Conditioning Low Pressure Switch: design or manufacturing (1)Blower Motor: failed (1)Evaporator Coil: clogged or contaminated (1)
- Airbags and seat belts
- Airbag: design or manufacturing (1)Airbag Sensor: failed (1)Seat Belt Buckle: clogged or contaminated (1)
- Suspension, wheels and tires
- Automatic Level Control: clogged or contaminated (1)Rear Axle Retainer Button: broken (1)
- Instruments and lighting
- Bulb: electrical fault (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・2000
Candidate cause (the documents say what to do)
Hydro-boost brake assist and power steering share one hydraulic supply (four campaigns)
Some vehicles were built with an out-of-specification hydro-boost housing relief valve bore.
The hydraulic brake booster pressure accumulator may crack and separate from the hydro-boost assembly during normal operating conditions.
What to do
- Perform the "Power Steering System Test" found in SI and make any necessary repairs based on system diagnosis.
- To tell whether a 670 gear box is fitted, inspect the mounting bolts that attach the stub shaft housing; a 670 gear box has only 3 mounting bolts.
- The PI document instructed technicians to diagnose the vehicle using the Power Steering Test Procedures if an owner complained about difficulty steering during "parking lot type maneuvers"; if the vehicle passed this test, no work was required, as GM viewed this as a normal phenomenon.
- Dealers replace the hydro-boost relief valve.
- Dealers test the hydro-boost assembly for functional operation and replace it if it fails.
- Dealers replace the hydraulic pump.
Caution: An inoperative pump raises steering and braking effort but does not completely remove the ability to steer or slow the vehicle.
What is needed
- Parts and materials
- Hydro-boost relief valve
- Hydro-boost assembly (if it fails the functional test)
- Hydraulic pump
- Power steering hoses (those with a suspect date code)
- Power Steering Gear 88965542, Union Fitting 26025709, Inlet O-ring Seal 26001594 (C/K 1500 series only)
- Replacement pressure control valve PN 26095470 (available, if the customer's situation warrants, to provide additional steering assist)
Part numbers printed in the document
88965542Gear, Steering (Remanufacture)Look up at RockAuto (aftermarket candidates) ↗Search the web ↗
Replaced by: 19330495as stated by GMPartsGiant (checked 2026-10-06) ↗Look up at RockAuto (aftermarket candidates) ↗Search the web ↗
26025709Fitting,P/S PumpLook up at RockAuto (aftermarket candidates) ↗Search the web ↗
No successor statedas stated by GMPartsGiant (checked 2026-10-06) ↗
26001594Seal,P/S Fluid Cooling Pipe(O Ring)Look up at RockAuto (aftermarket candidates) ↗Search the web ↗
No successor statedas stated by GMPartsGiant (checked 2026-10-06) ↗
26095470Look up at RockAuto (aftermarket candidates) ↗Search the web ↗
The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.
- Labor time
- Not stated
- Special tools
- Not stated
- 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, 1 records)
Passages of the technical documents
Some vehicles were built with an out-of-specification hydro-boost housing relief valve bore.
SOME OF THESE VEHICLES WERE PRODUCED WITH AN OUT-OF-SPECIFICATION BRAKE HYDRO-BOOST HOUSING RELIEF VALVE BORE.
NHTSA (recall summary text as published by NHTSA)
The valve O-ring seal may fracture, and steering effort may be slightly higher while braking or parking.
CONSEQUENTLY, THE VALVE O-RING SEAL MAY FRACTURE. STEERING EFFORTS MAY BE SLIGHTLY INCREASED WHILE BRAKING OR PARKING.
NHTSA (recall summary text as published by NHTSA)
Dealers replace the hydro-boost relief valve.
DEALERS ARE TO REPLACE THE HYDRO-BOOST RELIEF VALVE.
NHTSA (recall summary text as published by NHTSA)
The hydraulic brake booster pressure accumulator may crack and separate from the hydro-boost assembly during normal operating conditions.
THE HYDRAULIC BRAKE BOOSTER PRESSURE ACCUMULATOR MAY CRACK AND SEPARATE FROM THE HYDRO-BOOST ASSEMBLY DURING NORMAL OPERATING CONDITIONS.
NHTSA (recall summary text as published by NHTSA)
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.