Control Units

2008 Chevrolet HHR SS, StandardSECTION Control Units
CONTROL UNITS LOCATION

Component Location
Body Control Module (BCM) Under center dash, below radio, on right side of center console. See Figure.
Electronic Brake Control Module (EBCM) Left side of engine compartment, in front of engine control module (ECM). See Figure.
Engine Control Module (ECM) Left side of engine compartment, in front of underhood fuse block. See Figure.
Heated Seat Control Module - Driver Under front center of driver seat. See Figure.
Heated Seat Control Module - Passenger Under front center of front passenger's seat. See Figure.
Ignition Coil Module 1 On top of engine, under cover at cylinder No. 1. See Figure.
Ignition Coil Module 2 On top of engine, under cover at cylinder No. 2. See Figure.
Ignition Coil Module 3 On top of engine, under cover at cylinder No. 3. See Figure.
Ignition Coil/Module 4 On top of engine, under cover at cylinder No. 4. See Figure.
Inflatable Restraint Front Passenger Presence System (PPS) Module Under front passenger's seat. See Figure.
Inflatable Restraint Instrument Panel (I/P) Module Right side of dash, above glove compartment. See Figure.
Inflatable Restraint Roof Rail Module - Left Above front & rear left door rails behind headliner. See Figure.
Inflatable Restraint Roof Rail Module - Right Above front & rear right door rails behind headliner. See Figure.
Inflatable Restraint Sensing & Diagnostic Module (SDM) Under center console, forward of park brake. See Figure.
Inflatable Restraint Steering Wheel Module In steering wheel. See Figure.
Power Steering Control Module (PSCM) Lower left of dash, attached to steering column. See Figure.
Remote Control Door Lock Receiver (RCDLR) Front center of headliner. See Figure.
Sunroof Control Module (1) Center of headliner. See Figure.
Theft Deterrent Control Module Right side of steering column, at ignition switch. See Figure.
Throttle Actuator Control (TAC) Module (2.2L) Top of engine. See Figure.
Throttle Actuator Control (TAC) Module (2.4L) Top of intake manifold. See Figure.
Transmission Control Module (TCM) Left side of engine compartment. See Figure.
Vehicle Communication Interface Module (VCIM) (2) Right rear corner of vehicle. See Figure.
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.