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Service bulletin PIT3033B

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10226383
Published by NHTSA2022-11-21
Manufacturer's numberPIT3033B
Manufacturer's date2022-10-18
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR

NHTSA's summary

This Preliminary Information communication provides information to the technician that the Cam gear alignment can be incorrect after replacing the HVAC mode actuator.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
BUICK RAINIER2004, 2005, 2006, 2007
CHEVROLET TRAILBLAZER2003, 2004, 2005, 2006, 2007, 2008, 2009
CHEVROLET TRAILBLAZER EXT2003, 2004 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TRAILBLAZER EXT2006 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TRAILBLAZER EXT 3702005 (the catalog's model; the bulletin names a series or trim of it)
GMC ENVOY2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
GMC ENVOY XL2002, 2003, 2004 (the catalog's model; the bulletin names a series or trim of it)
GMC ENVOY XL2006 (the catalog's model; the bulletin names a series or trim of it)
GMC ENVOY XL 3702005 (the catalog's model; the bulletin names a series or trim of it)
GMC ENVOY XUV2003, 2004, 2005 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
15V5990002015-09-24. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
14V4040002014-07-02. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
13V2480002013-06-13. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM
12V4060002012-08-16. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM
05V0350002005-02-03. VISIBILITY:WINDSHIELD
04V2890002004-06-23. ENGINE AND ENGINE COOLING
20041952004-06-11. Engine
04V0460002004-02-04. VISIBILITY:WINDSHIELD WIPER/WASHER

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
04-06-04-051J2024-10-31. Service bulletin. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
09-06-04-026Y2024-09-05. Service bulletin. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
01-06-01-011P2024-09-05. Service bulletin. This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
16-NA-3832024-07-16. Service bulletin. This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
15-00-89-004G2024-05-15. Service bulletin. This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
PI0754A2024-04-29. Service bulletin. Rear and Side Tempered Glass Spots.
16-NA-3832024-03-19. Service bulletin. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
06-06-01-019C2024-03-19. Service bulletin. This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.
22-NA-0742024-02-29. Service bulletin. 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.
19-NA-0442024-02-21. Service bulletin. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.