| Subject: | Revised DTC P0045 | 
| Models: | 2004-2005 Chevrolet Kodiak, Silverado | 
| 2004-2005 GMC Sierra, TopKick | 
| with 6.6L Diesel Engine (VIN Code 2 - RPO LLY) | 
This bulletin is being issued to revise Step 3 of DTC P0045 in the Engine Controls 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.
Step  | Action  | Yes  | No  | 
|---|---|---|---|
3  | 
 Does the engine speed change when the valve is commanded ON?  | Go to Step 4  | Go to Step 5  |