Source reference 2006-12-01
Manufacturer communication — 2006 GMC YUKON XL
Relation to the target vehicle
- The trim is named in the text. A report may mention several vehicles, so check the quote.
- Model year
- Match 2006 — Source vehicle field
- Model
- Match YUKON XL — Source vehicle field
- Trim
- Match Denali — Stated in the text
…GMC Canyon, Envoy, Sierra, Yukon, Yukon Denali, Yukon XL, Jimmy, Sonoma, Suburban, Hum…
What the manufacturer’s document says
normal characteristic (no repair) ・ names this vehicle
Applies to
The information applies to 1999-2007 vehicles including GMC Yukon, Yukon Denali and Yukon XL with RPO NR4, NP1 or NP8 transfer case.
the passage
This information applies to 1999-2007 Cadillac Escalade, Chevrolet Avalanche, Trailblazer, Colorado, Blazer, S10, Silverado, Suburban, Tahoe, GMC Canyon, Envoy, Sierra, Yukon, Yukon Denali, Yukon XL, Jimmy, Sonoma, Suburban, Hummer H2 and H3 with RPO NR4, NP1, or NP8 Transfer Case.
Fault
The electronic transfer case may stop shifting and not set any DTCs.
the passage
The electronic transfer case may stop shifting and not set any DTCs.
Finding the cause
Possible causes
This occurs if the transfer case control module senses repeated shift requests in a short period of time.
the passage
This condition will occur if the transfer case control module senses repeated shift requests in a short period of time.
The transfer case control module software has a shift abuse lock out mode to protect the module and the encoder motor.
the passage
The software in the transfer case control module has a shift abuse lock out mode to protect the module and encoder motor.
If the driver shifts into and out of different modes continuously, the module stops trying to shift for several seconds to prevent abuse damage.
the passage
If the driver tries to shift into and out of different modes continuously, the transfer case control module will stop trying to shift for several seconds to prevent abuse damage to occur.
Correction
Repair
Cycling the ignition off for 30 seconds or more should allow the transfer case to resume normal operation.
the passage
Cycling the ignition off for 30 seconds or more should allow the transfer case to resume normal operation.
What is needed
- Parts and materials
- Not stated
- 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
Communication summary
トランスファーが切り替わらない この情報は、RPO NR4、NP1 または NP8 のトランスファーを装着した 1999-2007 Cadillac Escalade、Chevrolet Avalanche、Trailblazer、Colorado、Blazer、S10、Silverado、Suburban、Tahoe、GMC Canyon、Envoy、Sierra、Yukon、Yukon Denali、Yukon XL、Jimmy、Sonoma、Suburban、Hummer H2 および H3 に該当する。 電子制御トランスファーが切り替えをやめ、DTC を何もセットしないことがある。 この状態は、トランスファーコントロールモジュールが短時間に繰り返しの切り替え要求を検知した場合に発生する。 トランスファーコントロールモジュールのソフトウェアには、モジュールとエンコーダーモーターを保護するための、切り替えの乱用に対するロックアウトモードがある。 ドライバーが異なるモードへの切り替えと解除を続けて行おうとすると、乱用による損傷を防ぐため、トランスファーコントロールモジュールは数秒間、切り替えを試みるのをやめる。 イグニッションを 30 秒以上オフにすれば、トランスファーは通常の作動に戻るはずである。 Machine translation (unreviewed)
Transfer Case Won’t Shift This information applies to 1999-2007 Cadillac Escalade, Chevrolet Avalanche, Trailblazer, Colorado, Blazer, S10, Silverado, Suburban, Tahoe, GMC Canyon, Envoy, Sierra, Yukon, Yukon Denali, Yukon XL, Jimmy, Sonoma, Suburban, Hummer H2 and H3 with RPO NR4, NP1, or NP8 Transfer Case. The electronic transfer case may stop shifting and not set any DTCs. This condition will occur if the transfer case control module senses repeated shift requests in a short period of time. The software in the transfer case control module has a shift abuse lock out mode to protect the module and encoder motor. If the driver tries to shift into and out of different modes continuously, the transfer case control module will stop trying to shift for several seconds to prevent abuse damage to occur. Cycling the ignition off for 30 seconds or more should allow the transfer case to resume normal operation.
Go to this passage in the original
Source
- Source
- GM TechLink
- Source reference
- 2006-12-01
- Received by source
- 2006-12-01
- Incident date
- Unknown
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