WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Install the PCM.
Ensure that the mounting tabs are engaged.
Secure the spring latch to the PCM.

Fig 1: View Of PCM

Courtesy of GENERAL MOTORS CORP.

Connect the PCM electrical connectors.
NOTE: Refer to Fastener Notice in Cautions and Notices.
Tighten the PCM electrical connector bolts (2).
Tighten: Tighten the bolts to 8 N.m (71 lb in).

Fig 2: View Of PCM Electrical Connectors & Bolts

Courtesy of GENERAL MOTORS CORP.

Install the PCM cover.
Ensure the mounting tabs are engaged into the mounting holes in the cover.

Fig 3: View Of PCM Cover & Mounting Bracket

Courtesy of GENERAL MOTORS CORP.

If a NEW PCM was installed, program the PCM. Refer to Service Programming System (SPS) in Programming.
Perform the crankshaft position (CKP) system variation learn procedure. Refer to CKP System Variation Learn Procedure .

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

Use the Manual With the Right Hardware

When to See a Mechanic

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