Control Unit: Installation
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Rally Camper Special, 1994 GMC Rally, and 1994 GMC Forward Control. However, it is still accessible from the selected car via links, so may be relevant.
Install PROM and CALPAC (if equipped) or MEM-CAL in NEW PCM. See CALPAC , MEM-CAL , or PROGRAMMABLE READ-ONLY MEMORY (PROM) . Install PCM into vehicle. Connect electrical connectors to PCM. Install access panels. Reconnect negative battery cable.