Powertrain Control Module: Installation

NOTE: If the PCM is being programmed using the Off-Board method, perform the programming before continuing with the steps listed below. See POWERTRAIN CONTROL MODULE under PROGRAMMING in SELF-DIAGNOSTICS - 4.6L DEVILLE, ELDORADO & SEVILLE article.

Install the PCM. Install the PCM connectors. Tighten the PCM connectors screws to specification. See TORQUE SPECIFICATIONS . Install the intake air duct, MAF/IAT sensor, and the air filter element/PCM housing cover to the throttle body. Be sure to properly install the intake air duct to the throttle body.
An improperly installed, distorted, or damaged air filter or intake air duct may cause a DTC to set. Align and engage the tabs on the air filter element/PCM housing cover with the slots in the air filter element/PCM housing. Tighten the air filter element/PCM housing cover screws to specification.
Tighten the intake air duct clamp at the throttle body to specification. Reconnect the MAF/IAT sensor connector. Connect the negative battery cable. Program the PCM. See POWERTRAIN CONTROL MODULE under PROGRAMMING in SELF-DIAGNOSTICS - 4.6L DEVILLE, ELDORADO & SEVILLE article.

Slide the PCM isolators on to the PCM. Install the PCM connectors. Tighten the PCM connectors screws to specification. See TORQUE SPECIFICATIONS . Place the PCM into the air inlet housing. Close and latch the air inlet housing.
Ensure that the locating pin grommets are present and properly positioned in the bottom of the air cleaner assembly. Install the air inlet housing by inserting the outboard locating pin into the inside fender alignment hole. Press the air inlet housing firmly down to engage the bottom locating pins. Install the intake air duct/air cleaner assembly onto the air inlet housing.
An improperly installed air cleaner or a distorted/missing intake air duct may cause a DTC to set. Ensure that the following areas are checked: The air cleaner assembly and intake air duct is installed correctly and that there are no kinks or folds in the duct. No debris in the air cleaner assembly or the MAF sensor inlet screen that may distort the air flow. No signs of damage to the air cleaner assembly or the intake air duct. If a problem is found, repair as necessary.
Install the intake air duct to the throttle body. Tighten the intake air duct clamp to specification. Install the brace between the left fender and the radiator core support. Tighten the fender brace bolts to specification. Reconnect the MAF/IAT sensor connector. Connect the negative battery cable.
Program the PCM. See POWERTRAIN CONTROL MODULE under PROGRAMMING in SELF-DIAGNOSTICS - 4.6L DEVILLE, ELDORADO & SEVILLE article.

Install the PCM. Install the PCM connectors. Tighten the PCM connectors screws to specification. See TORQUE SPECIFICATIONS . Install the air cleaner cover onto the air inlet housing. Snap the assembly clamps into place. Align the intake air duct/resonator assembly into place.
Install the screw onto the intake air duct/resonator assembly. Tighten the intake air duct clamp to specification. Connect the negative battery cable. Program the PCM. See POWERTRAIN CONTROL MODULE under PROGRAMMING in SELF-DIAGNOSTICS - 4.6L DEVILLE, ELDORADO & SEVILLE article.