Powertrain Control Module: Installation

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Install PCM to bracket. Ensure PCM mounting tabs are engaged. Secure PCM spring latch. Connect harness connectors to PCM. Tighten PCM harness connector bolts to specification. See TORQUE SPECIFICATIONS .
Install PCM cover. Reconnect negative battery cable. If NEW PCM has been installed, PCM MUST be programmed. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.