| Subject: | Revised Rear Axle Fluid Capacity and Fluid Level Checking Specification | 
| Models: | 2005-2007 Buick Rainier | 
| 2005-2007 Chevrolet TrailBlazer Models | 
| 2005-2007 GMC Envoy Models | 
This bulletin is being issued to revise the rear axle fluid capacity and fluid level checking specification in the Rear Axle 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.
Application  | L6 Engine (LL8)  | V8 Engine (LH6)  | V8 Engine (LS2)  | |||
|---|---|---|---|---|---|---|
Metric  | English  | Metric  | English  | Metric  | English  | |
Differential Fluid - Rear  | ||||||
  | 1.7 L The correct fluid level is 0-10 mm below the fill plug opening.  | 3.6 pints The correct fluid level is 0-0.4 in below the fill plug opening.  | --  | --  | --  | --  | 
  | 2.0 L The correct fluid level is 0-10 mm below the fill plug opening.  | 4.2 pints The correct fluid level is 0-0.4 in below the fill plug opening.  | 2.0 L The correct fluid level is 0-10 mm below the fill plug opening.  | 4.2 pints The correct fluid level is 0-0.4 in below the fill plug opening.  | --  | --  | 
  | --  | --  | --  | --  | 2.6 L* The correct fluid level is 15-40 mm below the fill plug opening.  | 5.5 pints* The correct fluid level is 0.6-1.6 in below the fill plug opening.  | 
* With a complete drain/refill, add 163 ml (5.5 oz) of limited slip axle lubricant additive to the axle in addition to the axle lubricant.  | ||||||
Application  | Specification  | |
|---|---|---|
Metric  | English  | |
Differential Fluid - Rear Axle  | ||
  | 1.7 L The correct fluid level is 0-10 mm below the fill plug opening.  | 3.6 pt The correct fluid level is 0-0.4 in below the fill plug opening.  | 
  | 2.0 L The correct fluid level is 0-10 mm below the fill plug opening.  | 4.3 pt The correct fluid level is 0-0.4 in below the fill plug opening.  | 
  | 2.0 L The correct fluid level is 0-10 mm below the fill plug opening.  | 4.3 pt The correct fluid level is 0-0.4 in below the fill plug opening.  | 
  | 2.6L The correct fluid level is 15-40 mm below the fill plug opening.*  | 5.5 pt The correct fluid level is 0.6-1.6 in below the fill plug opening.*  | 
* With a complete drain/refill, add 163 ml (5.5 oz) of Limited Slip Axle Lubricant to the axle in addition to the axle lubricant.  | ||