LBZ LB7 LLY 6.6L Duramax Diesel Engine Accessory Drive Belt Chirp, Squeal or Squeak Type Noise at Cold Start Idle (Replace Accessory Drive Belt)
| Subject: | LBZ LB7 LLY 6.6L Duramax® Diesel Engine Accessory Drive Belt Chirp, Squeal, or Squeak Type Noise at Cold Start Idle (Replace Accessory Drive Belt) |
| Models: | 2002-2007 Chevrolet Silverado (Classic) |
| 2006-2007 Chevrolet Express |
| 2003-2007 Chevrolet Kodiak C4500/C5500 Series |
| 2002-2007 GMC Sierra (Classic) |
| 2006-2007 GMC Savana |
| 2003-2007 GMC TopKick C4500/C5500 Series |
| with 6.6L Duramax® Diesel Engine (VINs D, 1, 2 -- RPOs LBZ, LB7, LLY) |
| Attention: | Do not replace the accessory drive belt for a chirp noise during engine shutdown. This is a normal condition for a diesel engine. |
Condition
Some customers may comment on an accessory drive belt chirp, squeal, or squeak type noise at idle, especially on a cold start. The noise may be reduced or go away after the engine warms up.
Correction
- Refer to Service Bulletin Number 05-06-01-018A. Follow the service procedures outlined in the bulletin to diagnose and repair an accessory drive belt chirp, squeal, or squeak type noise at cold idle.
- If the noise was not fully eliminated by the service procedures outlined in the bulletin in step 1, then replace the accessory drive belt with a second design belt that may be less prone to noise.
Parts Information
Accessory Drive Belt (1367 mm) Part Number 98035628
Model | Engine | RPO |
|---|---|---|
2006-2007 Chevrolet Silverado | LBZ or LLY | KG7 or KG3 |
2006-2007 GMC Sierra | LBZ or LLY | KG7 or KG3 |
2003-2004 Chevrolet Silverado | LB7 | KG3 + NC1 or NF4 |
2003-2004 GMC Sierra | LB7 | KG3 + NC1 or NF4 |
2002 Chevrolet Silverado | LB7 | KG8 + NC1 or NF4 |
2002 GMC Sierra | LB7 | KG8 + NC1 or NF4 |
2003-2006 Chevrolet Kodiak C4500/5500 | LLY or LB7 | KG4 |
2003-2006 GMC TopKick C4500/5500 | LLY or LB7 | KG4 |
Accessory Drive Belt (1356 mm) Part Number 98035630
Model | Engine | RPO |
|---|---|---|
2004-2005 Chevrolet Silverado | LLY | KG3 |
2004-2005 GMC Sierra | LLY | KG3 |
2003-2004 Chevrolet Silverado | LB7 | KG3 + NF2 |
2003-2004 GMC Sierra | LB7 | KG3 + NF2 |
2002-2004 Chevrolet Silverado | LB7 | K68 + NC1 or NF4 |
2002-2004 GMC Sierra | LB7 | K68 + NC1 or NF4 |
2002 Chevrolet Silverado | LB7 | KG8 + NF2 |
2002 GMC Sierra | LB7 | KG8 + NF2 |
2003-2005 Chevrolet Kodiak C4500/5500 | LLY or LB7 | K68 |
2003-2005 GMC TopKick C4500/5500 | LLY or LB7 | K68 |
2006-2007 Chevrolet Express | LLY | KG3 |
2006-2007 GMC Savana | LLY | KG3 |
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J0667 | Belt, Primary Accessory Drive - Replace | Use Published Labor Operation Time |
