Control Unit: Installation
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Yukon, 1994 GMC Suburban, 1994 GMC Pickup, 1994 GMC Cab & Chassis, and 1994 GMC C3500 HD. 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.