10-08-45-001D Information for Electrical Ground Repair - Use New Replacement Fasteners with Conductive Finish - (Feb 14 2013)
|Subject:||Information for Electrical Ground Repair — Use New Replacement Fasteners with ConductiveFinish|
|Models:||2014 and Prior GM Passenger Cars and Trucks|
This bulletin is being revised to add the 2013 and 2014 model years and remove theSaab Warranty Information section. Please discard Corporate Bulletin Number 10-08-45-001C(Section 08 – Body and Accessories).Electrical Ground Repair Overview
Proper electrical system function relies on secure, stable and corrosion-free electricalground connections. Loose, stripped, or corroded connections increase the possibilityof improper system function and loss of module communication. These conditions mayalso lead to unnecessary repairs and component replacement.
In general, electrical ground connections are accomplished using one, or a combinationof the following attachment methods:Welded M6 stud and nutWelded M6 nut and boltWelded M8 nut and bolt
Determine which attachment method is used and perform the appropriate or alternativerepair as described in this bulletin.M6 Weld Stud Replacement
Caution:Use only the GM-approved replacement fasteners with conductive finish for electricalground repair.Select a location adjacent the damaged or missing M6 ground stud having 20 mm (0.79in) clearance behind the panel surface and 20 mm (0.79 in) clearance surrounding theM6 conductive rivet stud flange.Using GM approved residue-free solvent or equivalent, remove any grease from the repairsite and allow to dry.
Note:Ensure 20 mm (0.79 in) clearance is maintained behind the panel to be drilled.Drill a 10 mm (0.40 in) diameter hole through the panel.
Remove paint and primer from the area surrounding the 10 mm (0.40 in) hole until baremetal is visible.
Important:The M6 conductive rivet stud as shown, can accommodate a panel thickness range of0.7-4.2 mm (0.03-0.17 in). If there are layers of sheet metal, they should be touchingwithout any air gaps to ensure a good ground.Select a M6 conductive rivet stud. Refer to the Parts Information section of thisbulletin.
Note:Use the GE-50317 rivet stud tool kit.Place the M6 conductive rivet stud (1) in the 10 mm (0.40 in) hole. Assemble the rivetstud tool (2) with the groove and flare side facing the rivet stud, then the washerand the M6 nut (3).
Using a wrench on the rivet stud tool, and a socket on the M6 nut, secure the M6 conductiverivet stud.Ensure the rivet stud is securely fastened, WITHOUT ANY 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 theinstallation of the ground wire terminal and conductive nut to maintain a secure,stable and corrosion-free electrical ground.Refinish the repair area using an anti-corrosion primer. Refer to Anti-Corrosion Treatmentand Repair in SI.Allow the refinished repair area to cure sufficiently before removing the protectivematerial 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 studthreads to remove any adhesive and allow to dry.Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529)to the threads of the M6 conductive rivet stud.
Note:Fretting corrosion is a build-up of insulating, oxidized wear debris that can formwhen there is a small motion between electrical contacts.