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Service bulletin 08-04-19-004

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 id10026624
Published by NHTSA2008-11-20
Manufacturer's number08-04-19-004
Manufacturer's date2012-03-01
Replaces08-04-19-004B
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS

NHTSA's summary

GMC: CORRECT FRONT AXLE VENT HOSE ROUTING. THE FRONT AXLE VENT HOSE IS MOUNTED IN THE LEFT SIDE OF THE ENGINE COMPARTMENT, AND MAY NOT BE CORRECTLY ROUTED. *PE UPDATED ON 5/1/2012. *KB

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, Cooling system

Vehicles listed
CADILLAC ESCALADE2007, 2008, 2009, 2010, 2011
CADILLAC ESCALADE ESV2007, 2008, 2009, 2010, 2011, 2012 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE EXT2007, 2008, 2009, 2010, 2011, 2012 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVALANCHE2007, 2008, 2009, 2010, 2011, 2012
CHEVROLET SILVERADO2007, 2008, 2009, 2010, 2011, 2012
CHEVROLET SUBURBAN2007, 2008, 2009, 2010, 2011, 2012
CHEVROLET TAHOE2007, 2008, 2009, 2010, 2011, 2012
GMC SIERRA2007, 2008, 2009, 2010, 2011, 2012
GMC YUKON2007, 2008, 2009, 2010, 2011, 2012
GMC YUKON XL2007, 2008, 2009, 2010, 2011
GMC YUKON XL2012 (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
16V8680002016-12-02. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

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
18NA1032020-11-30. Service bulletin. This service bulletin provides information to correct a customer concern of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated.
PIP5684B2020-08-10. Service bulletin. This Preliminary information communicates the use of air leak diagnostic test tool CH-52250 in addition to the information found in the service manual.
PI1164A2018-12-10. Service bulletin. This preliminary bulletin provides information on how to check for ice and/or snow build up and to install a radiator cover to correct the customers concern of reduced engine power and service engine message on.
17-NA-0352018-05-21. Service bulletin. This technical bulletin provides a procedure to replace the engine cooling fan to correct conditions of the engine cooling fan being inoperative due to moisture within the connector of the fan module.
17-NA-0352017-08-15. Service bulletin. This technical bulletin provides a procedure to replace the engine cooling fan to correct conditions of the engine cooling fan being inoperative due to moisture within the connector of the fan module.
PIP4482C2017-08-15. Service bulletin. This Preliminary Information communication advises the technician of two types of DEX-COOL 50/50 Premix are available through General Motors Service Parts Operations, one with bitterant and one without. Bitterant is a chemical that is added to products to make them smell or taste extremely bitter and is required in some states, such as California, Oregon, New Mexico, Colorado, and Vermont.
PIP51082017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have an audible engine whine noise at 1500-1800 revolutions per minute. Technician will need to check the coolant level, remove serpentine belt to verify noise goes away, rotate the thermostat 90 degrees and retest, then replace thermostat and retest. Technician will replace the water pump if replacing the thermostat does not repair the audible engine whine noise.
PIP4158E2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.
PIE03682017-03-13. Service bulletin. THIS ENGINEERING INFORMATIONAL BULLETIN IS REQUESTING INFORMATION FROM THE FIELD WITH THE CONDITONS OF VEHICLE OVERHEATING, NOISE ORIGINATING FROM THE ENGINE COOLANT FANS OR POOR ENGINE COOLANT FAN PERFORMANCE.
PI06992012-05-01. Service bulletin. GM: GAUGE FLUCTUATION, VARIOUS DTCS, AND THE WIRING HARNESS MAY BE CHAFING/RUBBING ON A/C LINE. *JS UPDATED 5/22/12. *JS UPDATED 2/5/16. *PE