Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2009HHR LT, 2.4 V, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTENTERTAINMENT SYSTEMSCELLULAR SYSTEM, ENTERTAINMENT SYSTEM & NAVIGATION SYSTEMREPAIR INSTRUCTIONSCOMMUNICATION INTERFACE MODULE REPLACEMENT

2009 Chevrolet HHR LT, 2.4 V, Standard

Communication Interface Module Replacement

2009 Chevrolet HHR LT, 2.4 V, StandardSECTION Communication Interface Module Replacement

Fig 1: Identifying Communication Interface Module

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Remove the rear seat. Refer to Rear Seat Replacement . Remove the right rear quarter lower trim panel. Refer to Quarter Lower Rear Trim Panel Replacement .
1	Quarter Inner Trim Panel Bracket Screw (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2	Quarter Inner Trim Panel Bracket
3	Communication Interface Module Nut (Qty: 3) Tighten: 10 N.m (89 lb in)
4	Communication Interface Module Procedure Disconnect the electrical connector. Reprogram the communication interface module after installation. Refer to Control Module References . When replacing the communication interface module be sure to transfer Bluetooth Antenna, if equipped.

RENDER: 1.0x

NO RELATED

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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.