Powertrain Control Interface Module Replacement 5.3L Engine w/RPO HP2

1. Disconnect the energy storage box (ESB). Refer to Hybrid Battery Service Disconnect/Connect .
2. Disconnect the hybrid control module (HCM) electrical connector.

2.1.	Push the center retainer in while sliding the gray lever forward.

2.2.	Slide the gray lever forward completely until it locks.

2.3.	Remove the electrical connector.

3. Open the hose clamp on top of the fan shroud.
4. Remove the radiator hose from the clip.



5. Remove the HCM bracket bolts (3, 4).
6. Remove the HCM bracket (5) from the fan shroud.



7. Remove the HCM from the bracket.

1. Install the HCM to the bracket.

Notice: Refer to Fastener Notice in the Preface section.




2. Install the HCM bracket (5) to the fan shroud.
3. Install the HCM bracket bolts (3, 4).

Tighten
Tighten the bolts to 9 N·m (80 lb in).

4. Install the radiator hose to the clip.
5. Close the hose clamp on top of the fan shroud.



6. Connect the HCM electrical connector.

6.1.	Install the electrical connector.

6.2.	Slide the gray lever rearward completely until it locks.

7. Connect the ESB. Refer to Hybrid Battery Service Disconnect/Connect .
8. Program the HCM. Refer to Service Programming System (SPS) in Vehicle Control Systems.