2010 Cadillac Truck Escalade EXT AWD V8-6.2L Technical Service Bulletin # 08-04-19-004B Date: 120319

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Technical Service Bulletin # 08-04-19-004B Date: 120319

Drivetrain - Front Axle Vent Hose Mis-routed

INFORMATION

Bulletin No.: 08-04-19-004B

Date: March 19, 2012

Subject: Correct Front Axle Vent Hose Routing

Models:

2007-2012 Cadillac Escalade, Escalade ESV, Escalade EXT

2007-2012 Chevrolet Avalanche, Silverado, Suburban, Tahoe

2007-2012 GMC Sierra, Yukon, Yukon XL

with Four Wheel Drive or All Wheel Drive

Supercede:

This bulletin is being revised to add the 2011 and 2012 model year and update Parts Information. Please discard Corporate Bulletin Number

08-04-19-004A (Section 04 - Driveline/Axle).

The front axle vent hose is mounted in the left side of the engine compartment, and may not be correctly routed. The vent hose can get misrouted

and placed in a position that is lower than the front axle harness/engine harness in-line connector. In this position, the vent tube may ingest water.

The front axle vent hose may be routed to the wheel side of the wheel well. It may be hanging through the opening of the wheel well in a vertical

position, with the vent cap hanging down.

If you encounter a vehicle with the front axle vent hose misrouted, reroute the hose to the correct location. The hose should be mounted inside the

engine compartment, in an upward position to prevent the possibility of water being drawn into the hose and axle assembly during cool-down. Tape

the vent hose to the nearby wiring harness as shown. Technicians should also change the front axle fluid.

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 96

Parts Information

Warranty Information

For vehicles repaired under warranty, use the table.