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 MANUALSCHEVROLET2011SILVERADO 2500 2WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULETECHNICAL SERVICE BULLETINSCUSTOMER INTERESTENGINE CONTROLS - POOR ENGINE PERFORMANCE/LOW POWER
2011 Chevrolet Silverado 2500 2WD V8-6.6L DSL Turbo
Engine Controls - Poor Engine Performance/Low Power
2011 Chevrolet Silverado 2500 2WD V8-6.6L DSL TurboSECTION Engine Controls - Poor Engine Performance/Low Power
TECHNICAL
Bulletin No.: 11-06-04-001A
Date: February 07, 2011
Subject: Malfunction Indicator Lamp (MIL) Illuminated, Poor Engine Performance with Low Power, DTC P0299, P0513, P0606, P0622, P207F, P20EE, P2202 and/or P22A0 Set (Reprogram Engine Control Module (ECM))
Models:
2010 Chevrolet Express
2011 Chevrolet Express, Silverado
2010 GMC Savana
2011 GMC Savana, Sierra
Equipped with 6.6L Duramax(TM) Diesel Engine RPO LML or LGH
Supercede:
This bulletin is being revised to add DTC P207F and P20EE to the Subject and Condition. Please discard Corporate Bulletin Number 11-06-04-001 (Section 06 - Engine/Propulsion).
Condition
Some customers may comment that the malfunction indicator lamp (MIL) is illuminated and the engine performance is poor with low power.
The technician may observe on a scan tool one or more of the following DTC(s) P0299, P0513, P0606, P0622 (Express and Savana only), P207F, P20EE, P2202 and/or P22A0 set as Current or in History.
Cause
This condition may be caused by an anomaly in the engine control module (ECM) software.
Correction
Important
DO NOT reprogram the ECM or replace any component until you have REVIEWED the diagnostic information in SI for the DTC that was set. If the diagnostic path leads to a component or ECM replacement, then reprogram the ECM BEFORE replacing any parts.
1. Perform the Diagnostic System Check - Vehicle.
• If any of the listed DTCs are set as Current or in History, then reprogram the ECM.
2. A revised ECM calibration has been released to address this condition. Reprogram the ECM using the Service Programming System (SPS) with the latest calibration available on TIS2WEB. Refer to the SPS procedures and Control Module References > Engine Control Module Programming and Setup in SI.
3. When using an MDI or a Tech 2 for reprogramming, ensure that it is updated with the latest software version.
Note
Stable battery voltage is critical during programming.
4. 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 reprogrammed under the 5 year / 100,000 mile (160,000 km)
Duramax(TM) Diesel Engine warranty, use the table.
Disclaimer
Bulletin No.: 11-06-04-001A
Date: February 07, 2011
Subject: Malfunction Indicator Lamp (MIL) Illuminated, Poor Engine Performance with Low Power, DTC P0299, P0513, P0606, P0622, P207F, P20EE, P2202 and/or P22A0 Set (Reprogram Engine Control Module (ECM))
Models:
2010 Chevrolet Express
2011 Chevrolet Express, Silverado
2010 GMC Savana
2011 GMC Savana, Sierra
Equipped with 6.6L Duramax(TM) Diesel Engine RPO LML or LGH
Supercede:
This bulletin is being revised to add DTC P207F and P20EE to the Subject and Condition. Please discard Corporate Bulletin Number 11-06-04-001 (Section 06 - Engine/Propulsion).
Condition
Some customers may comment that the malfunction indicator lamp (MIL) is illuminated and the engine performance is poor with low power.
The technician may observe on a scan tool one or more of the following DTC(s) P0299, P0513, P0606, P0622 (Express and Savana only), P207F, P20EE, P2202 and/or P22A0 set as Current or in History.
Cause
This condition may be caused by an anomaly in the engine control module (ECM) software.
Correction
Important
DO NOT reprogram the ECM or replace any component until you have REVIEWED the diagnostic information in SI for the DTC that was set. If the diagnostic path leads to a component or ECM replacement, then reprogram the ECM BEFORE replacing any parts.
1. Perform the Diagnostic System Check - Vehicle.
• If any of the listed DTCs are set as Current or in History, then reprogram the ECM.
2. A revised ECM calibration has been released to address this condition. Reprogram the ECM using the Service Programming System (SPS) with the latest calibration available on TIS2WEB. Refer to the SPS procedures and Control Module References > Engine Control Module Programming and Setup in SI.
3. When using an MDI or a Tech 2 for reprogramming, ensure that it is updated with the latest software version.
Note
Stable battery voltage is critical during programming.
4. 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 reprogrammed under the 5 year / 100,000 mile (160,000 km)
Duramax(TM) Diesel Engine 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.