C 2500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2001)
2. If removed, install NEW grommets for the injector line fittings.
3. Apply a 2 - 3 mm (1/8 inch) wide to 0.5 - 1.5 mm (1/16 inch) high bead of sealant GM P/N 12378521 or equivalent to the upper valve rocker
arm cover sealing surface.
4. Apply a bead of sealant GM P/N 12378521 or equivalent to the area under the injector wire harness on the lower valve rocker arm cover.
5. Install the upper valve rocker arm cover.
