6.6 lly duramax diesel engines have an issue with the high pressure fuel lines that prevent them from...
Chevrolet technical service bulletin 01678 for 2004 Chevrolet Silverado and 2004 GMC Sierra.
- Bulletin number
- 01678
- Component
- Fuel system, gasoline: delivery: hoses, lines/piping, and fittings
- Summary
- 6.6 lly duramax diesel engines have an issue with the high pressure fuel lines that prevent them from achieving the proper torque upon reinstallation after a repair. Tt
Vehicles covered
- Chevrolet Silverado 2004 2004
- GMC Sierra 2004 2004
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