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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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Common on this vehicle:Warning light

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5 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.

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Known issues4WD/AWD lamps and system inoperative: "sleepy" New Venture Gear transfer case control module (reprogram the TCCM)1

  1. Manufacturer communication2002–2004 GMC FULLSIZE AND MIDSIZE PICKUPS AND UTILITIES (YUKON) ・ 2005-02-01

    "Sleepy" New Venture Gear transfer case control module: reprogram the TCCM

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      1. Verify the sleepy module as the primary cause, then reprogram the TCCM with the latest software.
      2. Replace the module only if a C0550 DTC shows as current or in history; the reference is bulletin 02-04-21-006D.

      Caution

      • Do not replace the encoder motor or the transfer case.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Row for 2002-2004 Fullsize and Midsize Pickups and Utilities: sleepy New Venture Gear transfer case control module.
    • Repair：Verify the sleepy module as the primary cause, then reprogram the TCCM with the latest software.
    • Caution：Do not replace the encoder motor or the transfer case.
    • Repair：Replace the module only if a C0550 DTC shows as current or in history; the reference is bulletin 02-04-21-006D.

    Open this issue of GM TechLink ↗ The points above are read from an article of TechLink, GM’s monthly publication for dealership technicians. The article itself is not reproduced here.

    Remedy
    Truck Issues — Fix It Right the First Time 2002-2004 Fullsize and Midsize Pickups and Utilities – Sleepy New Venture Gear Transfer Case Control Module Verify sleepy module as primary cause. Reprogram TCCM with latest software. Don’t replace encoder motor or transfer case. Replace the module only if a C0550 DTC shows as current or in history. 02-04-21-006D

ELECTRICAL SYSTEM2

  1. Manufacturer communication2004 GMC YUKON DENALI ・ 2004-12-14

    Intermittent Service Stability Message and DTC C0550

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      INTERMITTENT SERVICE STABILITY MESSAGE DISPLAYED, HISTORY DIAGNOSTIC TROUBLE CODE C0550. *TT

    Read the sentences of the record
    Remedy
    INTERMITTENT SERVICE STABILITY MESSAGE DISPLAYED, HISTORY DIAGNOSTIC TROUBLE CODE C0550. *TT

  2. Manufacturer communication2003–2004 GMC YUKON ・ 2004-07-06

    Service Communication: 4WD Light On With U1000 or C0550 Codes

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES OR C0550. *MJ

    Read the sentences of the record
    Remedy
    SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES OR C0550. *MJ

SERVICE BRAKES, HYDRAULIC1

  1. Manufacturer communication2003–2004 GMC YUKON ・ 2003-12-04

    Service Stability Message and DTCs C0455/C0550 Set

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SERVICE STABILITY MESSAGE AND DIAGNOSTIC TROUBLE CODES (DTCS) C0455 OR C0550 SET. *TT GM ADMINISTRATIVE MESSATE. *TT

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    Remedy
    SERVICE STABILITY MESSAGE AND DIAGNOSTIC TROUBLE CODES (DTCS) C0455 OR C0550 SET. *TT GM ADMINISTRATIVE MESSATE. *TT

STRUCTURE1

  1. Manufacturer communication2003 GMC YUKON ・ 2004-08-16

    SERVICE MESSAGE DISPLAYED, DTC C0550 SET

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Remedy
    SERVICE MESSAGE DISPLAYED, DIAGNOSTIC TROUBLE CODE (DTC) C0550 SET (REPROGRAM EBCM). *MJ UPDATE. ORIGINAL NOT YET RECEIVED. *TT