# Service bulletin 11\-06\-04\-007B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10044229
- Published by NHTSA: 2012\-05\-23
- Manufacturer's number: 11\-06\-04\-007B
- Manufacturer's date: 2012\-04\-01
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE

## NHTSA's summary

GM: DIAGNOSIS AND REPAIR\- MALFUNCTION INDICATOR LAMP ILLUMINATED, REDUCE ENGINE POWER MESSAGE DISPLAYED, DTC P2135 SET. ALSO INCLUDED MODEL SIERRA DENALI YEAR 2010\-2011 \*JS

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine

## Trouble codes named

P2135

## Vehicles listed

- 2008 to 2011 CADILLAC ESCALADE
- 2008 to 2011 CADILLAC ESCALADE ESV
- 2008 to 2011 CADILLAC ESCALADE EXT
- 2008 to 2011 CHEVROLET AVALANCHE
- 2008 to 2011 CHEVROLET COLORADO
- 2008 to 2011 CHEVROLET EXPRESS
- 2008 to 2011 CHEVROLET SILVERADO
- 2008 to 2011 CHEVROLET SUBURBAN
- 2008 to 2011 CHEVROLET TAHOE
- 2008 to 2009 CHEVROLET TRAILBLAZER
- 2008 to 2011 GMC CANYON
- 2008 to 2009 GMC ENVOY
- 2008 to 2011 GMC SAVANA
- 2008 to 2011 GMC SIERRA
- 2008 to 2009 GMC SIERRA DENALI
- 2008 to 2011 GMC YUKON
- 2008 to 2011 GMC YUKON DENALI
- 2008 to 2011 GMC YUKON DENALI XL
- 2008 to 2011 GMC YUKON XL
- 2008 to 2009 HUMMER H2
- 2008 to 2010 HUMMER H3

## Recalls for the same vehicles and component

- [16V868000](/recalls/nhtsa/16V868000.md), 2016-12-02: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

## Other bulletins for the same vehicles and component

- [00\-06\-01\-026R](/bulletins/11026017.md), 2025-12-03, Service bulletin: ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- [23\-NA\-153](/bulletins/11024485.md), 2025-10-25, Service bulletin: ENGINE. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
- [22\-NA\-074](/bulletins/11014233.md), 2025-02-12, Service bulletin: ENGINE. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
- [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin: VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [03\-06\-01\-023I](/bulletins/11012907.md), 2025-01-17, Service bulletin: ENGINE. This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- [19\-NA\-219](/bulletins/11011900.md), 2024-12-17, Service bulletin: ENGINE. This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- [21\-NA\-043](/bulletins/11011709.md), 2024-12-10, Service bulletin: STRUCTURE:BODY; WHEELS; ENGINE; SERVICE BRAKES; UNKNOWN OR OTHER. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [04\-06\-01\-029K](/bulletins/11011205.md), 2024-12-04, Service bulletin: POWER TRAIN; STEERING; ENGINE. This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
- [03\-06\-01\-023H](/bulletins/11010544.md), 2024-11-14, Service bulletin: ENGINE. This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- [01\-06\-01\-011Q](/bulletins/11010490.md), 2024-11-13, Service bulletin: ENGINE. This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.

JSON: [/v1/bulletins/10044229](/v1/bulletins/10044229)

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