Electrical Connections Or Wiring

WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

Poor electrical connections/terminal tension or wiring conditions cause most intermittents. Perform a careful inspection of the suspected circuit for the following:
- Inspect for poor mating of the connector halves, or terminals not fully seated in the connector body (backed-out).
- Inspect for improperly formed or damaged terminals. Check for poor terminal tension.
- Inspect for poor terminal to wire connections including terminals crimped over insulation. This requires removing the terminal from the connector body.
- Inspect for corrosion/water intrusion. Pierced or damaged insulation can allow moisture to enter the wiring. The conductor can corrode inside the insulation, with little visible evidence. Look for swollen and stiff sections of wire in the suspect circuits.
- Inspect for wires that are broken inside the insulation.
- Inspect the harness for pinched, cut or rubbed through wiring.
- Ensure wiring does not come in contact with hot exhaust components.