GMC Yukon 2000–2006
Common on this vehicle:NoiseWarning lightCorrosion or rustLeakMisfire or rough idleAir conditioning or heaterReduced brakingLights (headlights, turn signals)
Possible causes
49 causes not drawn
- DIC “Reduced Brake Power” message and reduced vacuum boost1
- Stability System Disabled message and unwanted StabiliTrak activation (tire wear or mismatched tires)1
- ABS lamp with DTC C0265 (EBCM motor relay circuit) after EBCM replacement1
- Rear bank knock sensor corrosion from water intrusion (P0332)4.8L, 5.3L, 6.0L only3
- Accessory drive belt whine (power steering pump pulley repositioned)1500 only1
- Castech cylinder head porosity crack (gradual coolant loss)4.8L, 5.3L only1
- 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
- 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
- Center console lid hard to open or close (lubricate the latch)2
- Door manual lock lever disengages from the door trim panel (lock lever replacement)2
- Rattle from the center of the dash (cowl insulator clip)1
- Door sags or is hard to open or close (worn or corroded hinge pins and bushings)1
- Front seat adjuster switch knob loose or missing (replace only the switch cover)1
- Headliner or roof rattle (roof drain channel)1
- Stains on the rear bumper step pad (treat with Armor-Dillo, do not replace)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
- Door Manual Lock Lever: loose or misadjusted3
- Ground Ring Terminal: loose or misadjusted3
- Trailer brakes applied whenever headlamps or park lamps are on (brake controller jumper harness)2
- Intermittent battery drain from a sticking A/C compressor relay1
- Poor radio reception from a loose radio antenna mast1
- Radio shows a disc error when a media disc is inserted (unsupported disc format or damaged disc)1
- 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
- Turn signal flashes fast (export flasher relay installed)1
- Wiring: corroded, electrical fault2
- DTC P0446 set with the SES lamp on (replace the EVAP vent solenoid, not the canister)3
- Out of fuel with the gauge reading above empty, cranks but no start, stall (replace the fuel sensor, not the sender module)2
- Fuel pressure regulator buzz / hum after replacement (check fuel pump feed voltage drop and connector crimps)4.8L, 5.3L, 6.0L only2
- Aftermarket part (not the vehicle as built): Fram G3727 replacement fuel filter connector - recall 06E-0431
- Fuel gauge reads low or drops to empty in Park / Neutral (normal characteristic)1
- Fuel Line: corroded2
- OnStar System: failed, software2
- Digital Radio Receiver: failed1
- CD Player: software1
- OnStar Hardware: software1
- 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
- Air Conditioning Compressor: failed2
- Seat Belt Buckle: clogged or contaminated, failed2
- Air bag (SIR) lamp on with DTC B1001 after BCM or SDM replacement1
- Seat Belt Warning Light: failed1
- CHECK OIL LEVEL message stays on after an oil change or top-off until the engine cools1
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.
- Suspension, wheels and tires
- Tire: broken, design or manufacturing (7)Automatic Level Control: clogged or contaminated (1)Rear Axle Retainer Button: broken (1)
- Airbags and seat belts
- Seat Belt: failed, loose or misadjusted (5)Seat Belt Retractor: failed (1)
- Transmission and driveline
- Transfer Case: failed (3)Locking Rear Differential (2)Transmission Oil Cooler Line: corroded, loose or misadjusted (2)Axle Differential Seal: leaking (1)
- Electrical, wiring and power
- ATC Fuse: electrical fault, failed (2)Powertrain Control Module: electrical fault (1)
- Fuel system
- Fuel Injector: clogged or contaminated, corroded (2)Fuel Tank Filler: design or manufacturing (2)
- Body, doors and interior
- Head Restraint: design or manufacturing (2)Button: failed (1)Center Console Lock: failed (1)Glass: design or manufacturing (1)Handle: design or manufacturing (1)
- Heating and air conditioning
- Air Conditioning Control Head: failed (1)Air Conditioning Low Pressure Switch: design or manufacturing (1)Blower Motor: failed (1)
- Instruments and lighting
- Bulb: failed (1)Information Center Screen: failed (1)Instrument Panel Cluster: failed (1)Rearview Mirror Courtesy Lamp: broken (1)
- Exhaust and emissions
- Evap Vent Valve: clogged or contaminated (1)Exhaust Manifold Heat Shield: loose or misadjusted (1)
- Steering
- Idler And Pitman Arm: worn (1)
- Audio and telematics
- Tweeter Speaker: loose or misadjusted (1)Voice Recognition System: software (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・2002
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
- Power Steering Pump: replaced 1（result not stated: 1）
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.