IMPORTANT: Inspect the following areas before installing the PCM:

No debris in the air filter element/PCM housing assembly, or the MAF/IAT sensor inlet screen that may distort the air flow.
No signs of damage to the air filter element/PCM housing assembly, or the intake air duct. If a problem is found, replace as necessary.

Fig 1: View Of PCM & MAF/IAT Sensor

Courtesy of GENERAL MOTORS CORP.

Install the PCM connectors and locks.
Install the PCM.
Install the intake air duct, MAF/IAT sensor, and the air filter element/PCM housing cover to the throttle body.
IMPORTANT: 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.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Tighten the air element/PCM housing cover screws.
Tighten: Tighten the air element/PCM housing cover screws to 4 N.m (35 lb. in.).
Tighten the intake air duct clamp at the throttle body.
Tighten: Tighten the clamp to 3 N.m (27 lb. in.).
Reconnect the MAF/IAT sensor connector.
Connect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Program the PCM. Refer to Control Module References in Computer/Integrating Systems.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Installation Procedure