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Component Locations

NOTE: For more information, including ground, connector and splice locations, see ELECTRICAL COMPONENT LOCATOR article in ELECTRICAL.
COMPONENT LOCATIONS

Component Location
ALDL Connector Behind Left Side Of Instrument Panel. See Fig 1 .
Body Computer Module (BCM) Behind Center of Instrument Panel. See Fig 2 .
Central Power Supply Behind Left side Of Instrument Panel, Right Of Steering Column. See Fig 2 .
Climate Control & Driver Information Center Center Of Instrument Panel, Ahead Of Console
Coolant Temperature Sensor In Cooling System Water Passage, Right Rear Corner Of Engine Compartment
Diagnostic Energy Reserve Module (DERM) Behind Left Of Instrument Panel, On Bracket Above Brake Pedal. See Fig 3 .
Electronic Brake Control Module Behind Left Side Of Instrument Panel, Left Of Steering Column. See Fig 1 .
Engine Control Module (ECM) Behind Right Side Of Instrument Panel, Near Shroud. See Fig 4 .
Engine Metal Temperature Switch Left Rear Of Engine, Near Exhaust Manifold
Electronic Spark Timing (EST) Distributor Left Top Of Engine
Fuse Block In Center Console
Heater & A/C Programer Behind Right Side Of Instrument Panel
Isolated Ground Junction Block Behind Right Seat, Behind Access Panel. See Fig 5 .
Output Switch Module (OSM) No. 2 Left Rear Of Trunk, On Base Of End Panel. See Fig 6 .
Output Switch Module (OSM) No. 3 Left Rear Of Trunk, On Base Of End Panel
Output Switch Module (OSM) No. 4 Right Side Of Trunk, Above Rear Wheel House. See Fig 7 .
Output Switch Module (OSM) No. 5 Right Side Of Trunk, Above Rear Wheel House. See Fig 7 .
Output Switch Module (OSM) No. 6 Right Rear Of Trunk, On Base Of End Panel
Output Switch Module (OSM) No. 7 Right Rear Of Trunk, On Base Of End Panel. See Fig 8 .
Output Switch Module (OSM) No. 9 Under Left Front Head Light. See Fig 9 .
Output Switch Module (OSM) No. 10 Under Left Front Head Light. See Fig 9 .
Output Switch Module (OSM) No. 13 Under Left Front Head Light. See Fig 9 .
RAP Relay No. 1 Behind Right Side Of Instrument Panel, Above Heater & A/C Plenum. See Fig 10 .
RAP Relay No. 2 Behind Right Side Of Instrument Panel, Above Heater & A/C Plenum. See Fig 10 .
Switch Pod, Left In Instrument Panel Cluster
Switch Pod, Right In Instrument Panel Cluster
Theft Deterrent Module Behind Right Side Of Instrument Panel, Above Heater & A/C Plenum. See Fig 11 .
Fig 1: Locating ALDL, Diode Array Module, EBCM & Over-Voltage Protection Relay
G00088030Courtesy of GENERAL MOTORS CORP.
Fig 2: Locating Body Computer Module (BCM) & Central Power Supply (CPS)
G00090120Courtesy of GENERAL MOTORS CORP.
Fig 3: Locating DERM
G00088027Courtesy of GENERAL MOTORS CORP.
NOTE: ECM is also known as the Powertrain Control Module (PCM).
Fig 4: Locating ECM
G00088036Courtesy of GENERAL MOTORS CORP.
Fig 5: Locating Isolated Ground Junction Block
G00090137Courtesy of GENERAL MOTORS CORP.
Fig 6: Locating Output Switching Module (OSM) No. 2
G00090141Courtesy of GENERAL MOTORS CORP.
Fig 7: Locating Output Switching Modules (OSM) No. 4 & No. 5
G00090143Courtesy of GENERAL MOTORS CORP.
Fig 8: Locating Output Switching Module (OSM) No. 7
G00090140Courtesy of GENERAL MOTORS CORP.
Fig 9: Locating Output Switching Modules (OSM) No. 9, No. 10 & No. 13
G00088003Courtesy of GENERAL MOTORS CORP.
Fig 10: Locating RAP Relays
G00090119Courtesy of GENERAL MOTORS CORP.
Fig 11: Locating Theft Deterrent Module
G00090118Courtesy of GENERAL MOTORS CORP.
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