Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009SILVERADO 3500 2WD V8-6.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULETECHNICAL SERVICE BULLETINSCUSTOMER INTERESTENGINE CONTROLS - ENGINE STALL ON DECELERATION WHEN HOT
2009 Chevrolet Silverado 3500 2WD V8-6.0L
Engine Controls - Engine Stall On Deceleration When Hot
2009 Chevrolet Silverado 3500 2WD V8-6.0LSECTION Engine Controls - Engine Stall On Deceleration When Hot
TECHNICAL
Bulletin No.: 09-06-04-035A
Date: November 02, 2009
Subject: Intermittent Engine Stall on Deceleration During Extreme High Ambient Temperatures (Reprogram ECM)
Models:
2009 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2009 GMC Sierra, Yukon, Yukon XL
Equipped with Engine RPOs LH6, LC9, LY5, LMG or L76
2009 HUMMER H2
Equipped with Engine RPO L9H
and All Equipped with 6L80 Automatic Transmission (RPO MYC)
Please Refer to GMVIS
Supercede:
This bulletin is being revised to add the HUMMER H2. Please discard Corporate Bulletin Number 09-06-04-035 (Section 06 - Engine/Propulsion System).
Condition
Some customers may comment on an intermittent engine stall while coming to a stop or when entering a turn during extreme high ambient temperatures. Typically, this occurs when the engine is under a heavy load (A/C on, brakes applied, etc.).
The engine will restart and no DTCs will be present.
Correction
A revised calibration has been developed to address this condition. Technicians are to reprogram the ECM with the latest Engine Operation calibrations available. This new service calibration is available on TIS2WEB using the Service Programming System (SPS). Refer to the SPS procedures in SI.
When using a Tech 2(R) or a multiple diagnostic interface (MDI) for reprogramming, ensure that it is updated with the latest software version.
During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics(R) PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer
Bulletin No.: 09-06-04-035A
Date: November 02, 2009
Subject: Intermittent Engine Stall on Deceleration During Extreme High Ambient Temperatures (Reprogram ECM)
Models:
2009 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2009 GMC Sierra, Yukon, Yukon XL
Equipped with Engine RPOs LH6, LC9, LY5, LMG or L76
2009 HUMMER H2
Equipped with Engine RPO L9H
and All Equipped with 6L80 Automatic Transmission (RPO MYC)
Please Refer to GMVIS
Supercede:
This bulletin is being revised to add the HUMMER H2. Please discard Corporate Bulletin Number 09-06-04-035 (Section 06 - Engine/Propulsion System).
Condition
Some customers may comment on an intermittent engine stall while coming to a stop or when entering a turn during extreme high ambient temperatures. Typically, this occurs when the engine is under a heavy load (A/C on, brakes applied, etc.).
The engine will restart and no DTCs will be present.
Correction
A revised calibration has been developed to address this condition. Technicians are to reprogram the ECM with the latest Engine Operation calibrations available. This new service calibration is available on TIS2WEB using the Service Programming System (SPS). Refer to the SPS procedures in SI.
When using a Tech 2(R) or a multiple diagnostic interface (MDI) for reprogramming, ensure that it is updated with the latest software version.
During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics(R) PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.