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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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2 conditions added

Common on this vehicle:NoiseWarning lightGauge or instrument faultLeakCorrosion or rustAir conditioning or heaterLights (headlights, turn signals)Vibration or shudder

Possible causes

Lights (headlights, turn signals), 200338 records
Electrical, wiring and power
Suspension, wheels and tires
3Trailer brakes applied whenever headlamps or park lamps are on (brake controller jumper harness)1DRLs or auto headlamps will not disable with the headlamp switch (Canada, RPO Z49; normal)1Replacement headlamp switch has no LED indicators and sets DTC B0951 (2003, normal)1Battery1Headlamp Switch1Turn Signal Switch3Vehicle body tilt or lean left / right (torsion bar front suspension)

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・Lights (headlights, turn signals), 2003

Candidate cause (the documents say what to do)

Trailer brakes applied whenever headlamps or park lamps are on (brake controller jumper harness)

With the headlamps or park lamps on, the trailer brakes are always applied, or the back lighting of the trailer brake controller illuminates only when the brakes are applied.

The condition may be due to wiring changes in the vehicle electrical system for the 2003 model year.

What to do

  1. Inspect the brake controller wiring harness jumper plugged into the vehicle relay block body, which is under the left side of the instrument panel near the left kick panel, behind a plastic cover.
  2. The 1999 through early 2003 jumper has a reddish/brown 6-way connector and a tag with the last four digits of the harness part number; a second design 2003 jumper may have a white plastic connector with part number 5418.
  3. The 2000 jumper harness is PN 15366255, with a pink/purple tag reading 6255.
  4. The 2001-02 jumper is PN 15086884, with an orange tag reading 6884.
  5. The 2003 jumper is PN 15085418, with an orange tag reading 5418.
  6. When a brake controller with its jumper attached is moved from a 2001-02 vehicle to a 2003 vehicle, the jumper harness connector must be changed.
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Part numbers printed in the document

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.

In the records

No record states work done for this cause.

See the evidence (3 technical documents, 3 records)

Passages of the technical documents

  • 2000-03 - Chevrolet Suburban, Tahoe - GMC Yukon, Yukon XL

    General Motors 2003-02-01

  • 02-05-22-004A; replaces 02-05-22-004; Trailer Brakes Applied when Headlights/Park Lamps are On, Brake Controller Illumination (Modify Brake Controller Wiring Harness); 2002-03 Cadillac Escalade, EXT, Chevrolet Avalanche, 2001-03 Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, Yukon, XL, 2003 Hummer H2

    General Motors 2002-11-01

  • Some customers may comment that when the headlamps or park lamps are on, the brakes on the trailer are always applied, or that the back lighting for the trailer brake controller illuminates only when the brakes are applied.

    General Motors 2003-02-01

  • This condition may be due to wiring changes within the vehicle electrical system for the 2003 model year.

    General Motors 2003-02-01

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Records

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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.