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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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2 conditions added

Common on this vehicle:Air conditioning or heaterNoiseWarning light

Possible causes

Warning light, B04341 records
Heating and air conditioning
Brakes
Transmission and driveline
Electrical, wiring and power
Engine
Exhaust and emissions
1Rear HVAC ticking noise, no rear temperature or mode control, DTC B0434 / B3764 (revised auxiliary HVAC control module)0Brake pipe (brake line) corrosion and rupture0ABS light with C0265/C0201/U1041 or no communication with brake module (EBCM ground G110)0Front right-hand brake pipe contact with body cross sill - recall 00V-3450Service Brake Booster message on a Hydroboost vehicle with DTC C0136 (instrument cluster not SPS programmed)0Stability System Disabled / Service Stability message with DTC C0455 (bent terminals at the steering wheel position sensor)0Transfer case service light, New Venture Gear transfer case (replace the encoder motor sensor and reprogram the TCCM)0Intermittent MIL, service lamps/messages or DTCs from connector fretting corrosion0Reduced Engine Power from throttle body connector crimp, broken wire or grounds0Crankshaft position sensor may work intermittently or fail (8.1L V8) - recall 07V-5210Intake manifold gasket leak (cold idle misfire, lean codes)0Single-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring0P0300 after engine repairs: injector connectors crossed (cylinders 5-7 / 6-8)0Rear bank knock sensor corrosion from water intrusion (P0332)0P0420 / P0430 on a new or just-replaced catalytic converter (break-in not completed)
9 causes not drawn

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・Warning light, B0434

Candidate cause (the documents say what to do)

Rear HVAC ticking noise, no rear temperature or mode control, DTC B0434 / B3764 (revised auxiliary HVAC control module)

The concerns are an intermittent ticking or clicking noise from the rear HVAC system, being unable to control the rear system temperature, and being unable to change the rear system modes.

A defaulted door stays at the default position until the code is cleared; clearing the code lets it operate properly until overtravel occurs again.

How to tell

B0434B3764

What to do

  1. The overtravel DTCs are B0434 for the auxiliary (rear) temperature door and B3764 for the auxiliary (rear) mode door.
  2. Replace the auxiliary (rear) HVAC control module; it contains a new calibration that compensates for the actuator overtravel and the hunting, clicking and ticking noises.
  3. For all 2003-06 with CJ2 and C69, the auxiliary HVAC control module is part number 15832319.
  4. The second design rear blower control module is 89024926 for Tahoe, Yukon and Escalade (short wheelbase) and 89018846 for Suburban, Yukon XL and Escalade ESV (long wheelbase).

Caution: With the new module the rear blower speed may rise slightly (approximately 50 rpm); if the customer objects, the blower control module may be replaced with the second design blower control module.

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 (2 technical documents, 1 records)

Passages of the technical documents

  • Owners of some 2003-06 Cadillac Escalade, Chevrolet Suburban and Tahoe, and GMC Yukon models with RPO CJ2 and C69 may have one or more of the following concerns:

    General Motors 2007-02-01

  • - Intermittent ticking/clicking noise from rear HVAC system - Unable to control rear system temperature - Unable to change rear system modes

    General Motors 2007-02-01

  • When a system door defaults, that door stays at the default position until the code is cleared. Clearing the code allows the door to operate properly until the overtravel condition re-occurs.

    General Motors 2007-02-01

  • The HVAC actuators may hunt for the correct commanded position. This cycling can cause a clicking or ticking noise.

    General Motors 2007-02-01

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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.