Valve Rocker Arm Cover Cleaning And Inspection
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
- Do not use the valve rocker arm cover gasket again. Install a NEW gasket during assembly.
- Remove the ignition bolts (1) and coils (2) before cleaning the cover in solvent. Do not submerge the ignition coils in solvent.
- Inspect the covers (3) for the following conditions:
- Scoring or damage to the gasket surfaces
- Ventilation system passages for restrictions
- Threaded bolt holes for damage or debris
IMPORTANT: