Removal & Installation (2.2L - Cavalier CNG)
WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
- Alternative Fuel Engine Control Module (AF ECM), also referred to as Alternative Fuel Engine Control Unit (AF ECU), is located behind left front headlight. See Fig 1. Disconnect negative battery cable. Remove front fender liner as required to access bolts from front fascia to fender. Remove front fascia to fender bolts. Remove push-in retainers from top and center of fascia. Remove push-in retainers from bottom of fascia. Remove front bumper fascia from vehicle.
- Remove AF ECM relay bracket bolt and relay bracket. Remove AF ECM. Disconnect electrical connectors from AF ECM. Remove nuts from ECU bracket studs and remove bracket.
- Install AF ECM mounting bracket to mounting studs using stud nuts. Tighten mounting stud nuts and AF ECM relay bracket bolts to specification. See TORQUE SPECIFICATIONS . To complete installation, reverse removal procedure.