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ATS Stage 6 Allison LCT1000 Transmission Package, 4WD, 2004.5-2005 6.6L LLY Duramax.
Includes:
| Model | Year(s) |
|---|---|
| Chevrolet Silverado 2500 HD | 2003 2004 |
| GMC Sierra 3500 | 2003 2004 |
| Chevrolet Silverado 3500 | 2003 2004 |
| GMC Sierra 2500 HD | 2003 2004 |
| Chevrolet Silverado 2500 HD LS | 2003 2004 |
| Chevrolet Silverado 3500 LS | 2003 2004 |
| Chevrolet Silverado 3500 LT | 2003 2004 |
| Chevrolet Silverado 2500 HD LT | 2003 2004 |
| GMC Sierra 3500 SLE | 2003 2004 |
| GMC Sierra 2500 HD SLE | 2003 2004 |
| GMC Sierra 2500 HD SLT | 2003 2004 |
| GMC Sierra 3500 SLT | 2003 2004 |
| GMC Sierra 2500 HD WT | 2003 2004 |
| GMC Sierra 3500 WT | 2004 |
| Chevrolet Silverado 3500 WT | 2004 |
| Chevrolet Silverado 2500 HD WT | 2004 |
