Powertrain Control Module (Pcm): Installation

WARNING: This page does not describe the selected car, but rather 29 other vehicles, including the 1999 Pontiac Montana, 1999 Oldsmobile Silhouette, 1999 Oldsmobile Bravada, 1999 GMC Yukon, and 1999 GMC Sonoma. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: On all models except 1.6L and 2.0L, after installation of a NEW PCM, Malfunction Indicator Light (MIL) will remain on until PCM is programmed.

On 4.3L, 5.0L, 5.7L and 7.4L, install knock sensor module in NEW PCM. Install access cover. On all models, install PCM into vehicle. Connect harness connectors to PCM. Reconnect negative battery cable. If NEW PCM has been installed, PCM MUST BE programmed. See 2000 COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.