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Selected vehicle: 2006 · GMC Yukon XL Denali

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Source reference 10112001

Manufacturer communication — 2006 GMC YUKON DENALI XL

Fitment confirmedReporter type: ManufacturerSERVICE BRAKES, AIR:SUPPLY:COMPRESSORSUSPENSION

Relation to the target vehicle

  • The source's vehicle field includes the trim.
Model year
Match 2006 — Source vehicle field
Model
Match YUKON DENALI XL — Source vehicle field
Trim
Match Denali — Source vehicle field

What the manufacturer’s document says

PIT4954D ・ fault and correction ・ names this vehicle

Applies to

  • Applies to 2001-2014 GMC Yukon models with RPO Z55 or Z95.

    the passage
    2001-2014 GMC Yukon Models With RPO Z55 or Z95

Fault

  • Condition 1: on 2009 or prior vehicles, a Service Suspension System message shows on the DIC, the rear ride height is incorrect, and the Electronic Suspension Control (ESC) module has DTC C0696 or C0711 set.

    the passage
    CONDITION #1: Some customers of 2009 or prior vehicles, may comment of a Service Suspension System message on the DIC and the rear suspension ride height is incorrect. When checking for DTCs the Electronic Suspension Control (ESC) module will have DTC C0696 or C0711 set.

  • Condition 2: a Service Suspension System message shows on the DIC, the rear ride height may be low under a heavy payload, and the ESC module has DTC C0711 set.

    the passage
    CONDITION #2: Some customers may comment of a Service Suspension System message on the DIC and may also comment that the rear suspension ride height may be low under a heavy payload. When checking for DTCs the Electronic Suspension Control (ESC) module will have DTC C0711 set.

  • Condition 3: a loose hose hangs down at the left rear of the vehicle; the hose may be damaged or disconnected from the air inlet filter of the auto leveling suspension air compressor.

    the passage
    CONDITION #3: Some customers may comment of a loose hose hanging down in the left rear of the vehicle. Upon inspection it may be determined that the hose is damaged or has become disconnected from the air inlet filter of the auto leveling suspension air compressor.

  • Condition 4: the automatic level control compressor no longer performs a self test (running for a few seconds) at start up.

    the passage
    CONDITION #4: Some customers may comment that the automatic level control compressor is no longer performing a self test (compressor activating for a few seconds) at start up.

Finding the cause

Possible causes

  • This concern could be caused by the wiring to the automatic level control (ALC) pressure sensor being shorted to ground.

    the passage
    This concern could be caused by the wiring to the automatic level control (ALC) pressure sensor being shorted to ground, as shown below.

  • This concern may be caused by an internal fault in the automatic level control (ALC) pressure sensor, which may occur due to moisture getting into the sensor.

    the passage
    This concern may be caused by an internal fault in the automatic level control (ALC) pressure sensor. This may occur due to moisture getting into the sensor.

Steps to confirm (in the document’s order)

  1. The air compressor assembly may need to be removed from the vehicle to see whether the wiring is pinched between the compressor assembly and the frame.

    the passage
    Note: The air compressor assembly may need to be removed from the vehicle to determine if the wiring is possibly pinched between the compressor assembly and frame.

  2. If the pressure is below 10 psi (69 kpa), the system runs the compressor to add air to the shocks as a replenishment cycle.

    the passage
    If the pressure is below 10 psi (69 kpa) then the system will operate the compressor to add air to the shocks as a replenishment cycle.

Correction

Repair

  1. For condition 1, do not replace the complete air compressor assembly; repair any damaged or shorted circuits, then reposition the wiring so it is not damaged again when the compressor assembly is installed.

    the passage
    CONDITION #1: Note: Do NOT replace the complete air compressor assembly for this concern. Repair any damaged or shorted circuits and then reposition the wiring so it does not get damaged again during the compressor assembly installation.

  2. The sensor is no longer serviced separately; for sensor replacement, install a complete air filter, dryer, and sensor assembly.

    the passage
    The sensor is no longer serviced separately. For sensor replacement, install a complete air filter, dryer, and sensor assembly.

  3. For condition 3, do not replace the complete air compressor assembly; replace the auto leveling compressor air inlet filter and hose assembly (PN 22197160).

    the passage
    CONDITION #3: Note: Do NOT replace the complete air compressor assembly for this concern. Replace the auto leveling compressor air inlet filter and hose assembly (PN 22197160), shown below.

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.

Parts

  • The jumper harness is included with the complete air filter, dryer, and sensor assembly PN 22964558; vehicles built in May, 2012 and later do not require the jumper harness and use PN 22941807.

    the passage
    The jumper harness is included with complete air filter, dryer, and sensor assembly, PN 22964558. Vehicles built in May, 2012 and later do not require the jumper harness, and use PN 22941807.

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.

Caution

  • Do NOT replace the complete air compressor assembly for this concern.

    the passage
    Do NOT replace the complete air compressor assembly for this concern.

  • Route the sensor wiring carefully under and around the air filter, dryer, and sensor assembly to prevent damage along the vehicle frame.

    the passage
    Ensure the sensor wiring (1) is routed carefully under and around the air filter, dryer, and sensor assembly to prevent damage along the vehicle frame

  • The automatic level system normally will not, or will only very infrequently, cycle the compressor at key up.

    the passage
    The automatic level system normally will not or very infrequently cycle the compressor at key up.

What is needed

Parts and materials
  • Complete air filter, dryer, and sensor assembly PN 22964558 (jumper harness included; vehicles built before May, 2012; when the sensor needs to be replaced)
  • Auto leveling compressor air inlet filter and hose assembly PN 22197160 (when the hose is damaged or disconnected)
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.

Compiled by reading the full text of the document; each point stands on the passage shown. Check the document itself, linked below, before working on a vehicle.

Stated content

  1. Communication summary

    本予備情報通知は、ドライバーインフォメーションセンターに「Service Suspension System」メッセージが表示され、リアサスペンションの車高が不正な車両についての情報を提供します。整備士は電子サスペンション制御システムに診断コードC0696またはC0711が入っていることを確認します。整備士はエアコンプレッサー ASSY を検査してハーネスの損傷がないか確認し、損傷がある場合は修復してください。エアコンプレッサー ASSY 全体を交換しないでください。一部の車両ではドライバーインフォメーションセンターに「Service Suspension System」メッセージが表示される場合があり、また重い積載時にリアサスペンションの車高が低くなる可能性があるとコメントされている場合があります。整備士は公開されているサービス情報の診断に従い、センサーの交換が必要と判断した場合、整備士はエアフィルター、ドライヤー、およびセンサー ASSY 全体を交換する必要があります。一部の車両では緩いホースが車両の左リア部分に垂れ下がっている場合があります。整備士はオートレベリングコンプレッサーのエアインレットフィルターおよびホース ASSY を交換してください。また一部の車両ではオートレベリングコンプレッサーがスタートアップ時に自己診断を実行していません。オートレベリングシステムは通常、キーオンで圧縮機を作動させない、または非常に低い頻度でしか作動させないことにご注意ください。 Machine translation (unreviewed)

    This Preliminary Information communication provides information to the technician about vehicles that have a Service Suspension System message on the Driver Information Center and the rear suspension ride height is incorrect. Technician will find Diagnostic Trouble Code C0696 or C0711 set in Electronic Suspension Control. Technician will need to inspect air compressor assembly for wire damage and repair any damage do not replace the complete air compressor assembly. Some vehicles may have a Service Suspension System message on the Driver Information Center and may also comment that the rear suspension ride height may be low under a heavy payload. Technician will follow published Service Information diagnostics and if determine if the sensor needs to be replaced technician will need to replace a complete air filter, dryer, and sensor assembly. Some vehicles may have a loose hose hanging down in the left rear of the vehicle. Technician will replace the auto leveling compressor air inlet filter and hose assembly. Also some vehicles may have automatic level control compressor is no longer performing a self-test at start up. Be advised the automatic level system normally will not or very infrequently cycle the compressor at key up.
    Go to this passage in the original

Source

Source
NHTSA Manufacturer Communications
Source reference
10112001
Received by source
2017-08-15
Incident date
Unknown

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