- If the M8 weld nut electrical ground location is not accessible from both sides of the panel, a conductive M6 rivet stud and a conductive M6 nut may be used to secure the ground terminal. Refer to GM parts catalog for the correct part numbers and application.
CAUTION:
Use GM approved replacement fasteners with conductive finish for electrical ground repair.
- Select a location adjacent the damaged M8 weld nut having 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in) clearance surrounding the new, conductive M6 rivet stud flange.
- Using GM approved residue-free solvent or equivalent, remove any grease from the repair site and allow to dry.
- Drill a 10 mm (0.40 in) diameter hole through the panel.
NOTE:
Ensure 20 mm (0.79 in) clearance is maintained behind the panel to be drilled.
- Carefully remove paint and primer from the area surrounding the rivet stud flange until bare metal is visible.
- Using a rivet stud installer, install the replacement conductive M6 rivet stud.
- Ensure the new rivet stud is securely fastened, with no detectable movement.
- Completely wrap the threads of the rivet stud with painters tape or equivalent.
NOTE:
The rivet stud and surrounding panel area must be properly refinished prior to the installation of the ground terminal and nut to maintain positive electrical grounding.
- Refinish the repair area using an anti-corrosion primer.
- Allow the refinished repair area to cure sufficiently before removing the protective material applied to the rivet stud threads.
- Remove the painters tape or equivalent from the rivet stud threads.
- Using GM approved residue-free solvent or equivalent, thoroughly clean the rivet stud threads to remove any adhesive and allow to dry.
- Carefully remove any corrosion from the electrical ground wire terminal. Refer to Testing for Intermittent Conditions and Poor Connections
.
- Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the new conductive M6 rivet stud threads.
- Install the ground terminal to the new, conductive M6 rivet stud.
- Install the conductive M6 nut and tighten to 8 N.m (71 lb in).
- Check for proper system operation.