| Subject: | Revised Wheel Drive Shaft Nut Torque Specification | 
| Models: | 2002-2004 Cadillac Escalade, Escalade EXT | 
| 2003-2004 Cadillac Escalade ESV | 
| 1999-2004 Chevrolet Silverado | 
| 2000-2004 Chevrolet Suburban | 
| 2002-2004 Chevrolet Avalanche | 
| 2003-2004 Chevrolet Astro, Express | 
| 1999-2004 GMC Sierra | 
| 2000-2004 GMC Yukon, Yukon XL | 
| 2003-2004 GMC Safari, Savana | 
| 2003-2004 HUMMER H2 | 
This bulletin is being issued to revise the torque specification for the wheel drive shaft nut in the Wheel Drive Shafts sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
The torque specification for the wheel drive shaft nut has been revised as shown in the table below.
Model Year  | Model(s)  | Revised Specification  | SI Documents Affected  | 
|---|---|---|---|
2002-2004  | Cadillac Escalade, Escalade EXT  | 240 N·m (177 lb ft)  | 673317, 673320, 405547, 596638, 875921, 665743, 1368534, 793723, 1297391, 854312, 517002, 290231  | 
2003-2004  | Cadillac Escalade ESV  | ||
1999-2004  | Chevrolet Silverado; GMC Sierra  | ||
2000-2004  | Chevrolet Suburban; GMC Yukon, Yukon XL  | ||
2002-2004  | Chevrolet Avalanche  | ||
2003-2004  | Chevrolet Astro; GMC Safari  | 235 N·m (173 lb ft)  | 1462212, 1462214, 1462216, 1462209, 1462197, 1462211  | 
2003-2004  | Chevrolet Express; GMC Savana  | 799062, 833913, 1225934, 1463919, 1225936  | |
2003-2004  | HUMMER H2  | 821237, 1462197, 821253, 797253, 797393  |