Source reference 10113325
Manufacturer communication — 2006 GMC YUKON DENALI XL
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
PIP3119N ・ fault and correction ・ names this vehicle
Applies to
The model list names 2004 - 2017 GMC Savana, Sierra, Sierra Hybrid, Yukon and Yukon Hybrid.
the passage
2004 - 2017 GMC Savana, Sierra, Sierra Hybrid, Yukon, Yukon Hybrid
Fault
An SES light may appear on low mileage vehicles or after a recent catalytic converter replacement.
the passage
A SES light may be experienced on low mileage vehicles, or vehicles that have recently had thecatalytic converter replaced.
DTCs P0420 and/or P0430 may be stored.
the passage
Upon inspection, DTCs P0420 and/or P0430 may be stored.
Finding the cause
Possible causes
After a converter replacement the engine run time restrictions are no longer in place because the vehicle is no longer new, so the converter may not complete a thorough break-in cycle, possibly resulting in a false DTC P0420 and/or P0430.
the passage
If the DTCs set shortly after the catalytic converter is replaced, it may be a result of the engine runtime restrictions no longer being in place since the vehicle is no longer new. As a result, the catalyticconverter may not have completed a thorough break-in cycle after replacement, possibly resulting ina false DTC P0420 and/or P0430.
Steps to confirm (in the document’s order)
On a new or low mileage vehicle, use the Tech 2 to verify engine run time on the Engine Hour Meter in the IPC data display.
the passage
If these DTCs are found on a new/low mileage vehicle, use the Tech 2 to verify engine run time onthe Engine Hour Meter in the IPC Data Display/Data 1 List.
Correction
Repair
Clear the DTCs and perform the drive cycle described in the document.
the passage
If this occurs, clear the DTCs and perform the drive cycle below.
Drive cycle step: drive at sustained highway speed for 25 to 30 minutes, then stop.
the passage
Drive vehicle at sustained highway speed for 25 to 30 minutes 2. Bring vehicle to a stop
Drive cycle step: after the engine has been off for 1 minute, restart and resume highway speed for an additional 10 to 15 minutes.
the passage
Shut off the engine for 1 minute 4. Restart the engine and resume highway speed for an additional 10 to 15 minutes
If the diagnostics do not pass after the drive cycle, perform SI diagnostics and repair as necessary.
the passage
If the diagnostics do not pass, perform SI diagnostics and repair as necessary.
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
本予備情報通知は、低走行距離でエンジン警告灯（Service Engine Soon）が点灯している車両の診断と修理の手順について整備士に情報を提供するものです。整備士は診断コードP0420および/またはP0430が入っている可能性があります。整備士は、触媒コンバーター効率診断コードP0420およびP0430が触媒コンバーターの慣らし運転を許可するためにエンジン始動後最初の1時間は無効になることについて助言される必要があります。整備士はTech2を使用して、スキャンツールの一致メーターデータディスプレイ/データ1リストのエンジンアワーメーター上でエンジン始動時間を確認して検証する必要があります。エンジン始動時間が1時間未満の場合、バッテリーが切断されたか、または車両製造中に別の車両電源喪失イベントが発生した可能性があります。整備士は診断コードをクリアしてドライブサイクルを実行する必要があります。触媒コンバーターが交換され、診断コードが入った場合、車両がもはや新しくないため、エンジン始動時間の制限がもはや有効でないことが原因である可能性があります。整備士は診断コードをクリアしてドライブサイクルを実行する必要があります。 Machine translation (unreviewed)
This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should be advised that the catalytic converter efficiency Diagnostic Trouble Codes P0420 and P0430 are disabled for the first hour of engine run time to allow break-in of the catalytic converter. Technician will need to use a Tech2 to check the verify engine run time on the Engine Hour Meter in the Instrument Panel Cluster  Data Display/Data 1 List in the scan tool match. If the engine run time is less than one hour, the battery may have been disconnected, or another vehicle power loss event may have occurred, during vehicle manufacturing. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle. If the catalytic converter was replaced and the Diagnostic Trouble Codes set it may be a result of the engine run time restrictions no longer being in place since the vehicle is no longer new. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle.
Go to this passage in the original
Source
- Source
- NHTSA Manufacturer Communications
- Source reference
- 10113325
- Received by source
- 2017-08-15
- Incident date
- Unknown
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