GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Heated Seat Back, Left Side

In the left front of the passenger compartment, in the front seat back

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Heated Seat Back, Right Side

In the right front of the passenger compartment, in the front seat back

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Heated Seat Cushion, Left Side

In the left front of the passenger compartment, in the front seat cushion

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Heated Seat Cushion, Right Side

In the right front of the passenger compartment, in the front seat cushion

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Heated Seat Relay Module, Left Side

In the left front of the passenger compartment, under the left front seat

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Power Seat Connector End Views

Heated Seat Relay Module, Right Side

In the right front of the passenger compartment, under the right front seat

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Power Seat Connector End Views

Heated Seat Switch, Left Side

In the front center of the passenger compartment, on the top of the center console

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Heated Seat Switch, Right Side (DeVille)

In the right front of the passenger compartment, on the right side of the front seat

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Heated Seat Switch, Right Side (Eldorado)

In the center front of the passenger compartment, on the top of the center console

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Lumbar Horizontal Motor, Left Side

In the left front of the passenger compartment, in the left front seat back

Power Seat Component Views

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Lumbar Horizontal Motor, Right Side

In the right front of the passenger compartment, in the right front seat back

Power Seat Component Views

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Lumbar Horizontal Relay, Left Side

In the left side of the passenger compartment, under the left front seat

Power Seat Component Views

Power Seat Connector End Views

Lumbar Horizontal Relay, Right Side

In the right side of the passenger compartment, under the right front seat

Power Seat Component Views

Power Seat Connector End Views

Lumbar Switch, Left Side

In the left front of the passenger compartment, on the left side of the front seat

Power Seat Component Views

Power Seat Connector End Views

Lumbar Switch, Right Side

In the right front of the passenger compartment, on the right side of the front seat

Power Seat Component Views

Power Seat Connector End Views

Lumbar Vertical Motor, Left Side

In the left front of the passenger compartment, in the left front seat back

Power Seat Component Views

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Lumbar Vertical Motor, Right Side

In the right front of the passenger compartment, in the right front seat back

Power Seat Component Views

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Lumbar Vertical Relay, Left Side

In the left side of the passenger compartment, under the left front seat

Power Seat Component Views

Power Seat Connector End Views

Lumbar Vertical Relay, Right Side

In the right side of the passenger compartment, under the right front seat

Power Seat Component Views

Power Seat Connector End Views

Memory Seat Module (MSM)

In the left front of the passenger compartment, under the left front seat

Power Seat Component Views

Power Seat Connector End Views

Rear Compartment Fuse Block

In the left front of the rear compartment, on the electronics bay

Body Control System Component Views in Body Control System

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Recline Motor, Left Side

In the left front of the passenger compartment, under the left front seat

Power Seat Component Views

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Recline Motor, Right Side

In the right side of the passenger compartment, under the right front seat

Power Seat Component Views

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Recline Position Sensor

Under the respective front seat, near the respective seat adjuster motor

Power Seat Component Views

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Seat Horizontal Motor, Left Side

In the left side of the passenger compartment, under the left front seat

Power Seat Component Views

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Seat Horizontal Motor, Right Side

In the right side of the passenger compartment, under the right front seat

Power Seat Component Views

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Seat Horizontal Position Sensor

Under the left front seat, near the seat adjuster motor

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Seat Relay Module, Left Side

In the left front of the passenger compartment, under the left front seat

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Power Seat Connector End Views

Seat Relay Module, Right Side

In the right side of the passenger compartment, under the right front seat

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Power Seat Connector End Views

Seat Switch, Left Side (DeVille)

In the left front of the passenger compartment, on the left front door

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Power Seat Connector End Views

Seat Switch, Left Side (Eldorado)

In the left front of the passenger compartment, on the left side of the front seat

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Power Seat Connector End Views

Seat Switch, Right Side (DeVille)

In the right front of the passenger compartment, on the right front door

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Power Seat Connector End Views

Seat Switch, Right Side (Eldorado)

In the right front of the passenger compartment, on the right side of the front seat

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Power Seat Connector End Views

Underhood Fuse Block, Left Side

On the left side of the engine compartment, near the underhood fuse block

Power and Grounding Component Views in Wiring Systems

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Vertical Motor, Left Seat Front

In the left side of the passenger compartment, under the left front seat

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Vertical Motor, Left Seat Rear

In the left front of the passenger compartment, under the left front seat

Power Seat Component Views

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Vertical Motor, Right Seat Front

In the right side of the passenger compartment, under the right front seat

Power Seat Component Views

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Vertical Motor, Right Seat Rear

In the right side of the passenger compartment, under the right front seat

Power Seat Component Views

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Vertical Position Sensor, Seat Front

Under the left front seat, near the seat adjuster motor

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Vertical Position Sensor, Seat Rear

Under the respective front seat, near the respective seat adjuster motor

Power Seat Component Views

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C303 (6 cavities)

Body harness to the right seat harness, in the right side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C304 (8 cavities)

Body harness to the right seat harness, in the right side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C305 (6 cavities) (DeVille)

Body harness to the left seat harness, in the left side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C305 (8 cavities) (Eldorado)

Body harness to the left seat harness, in the left side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C306 (8 cavities)

Body harness to the left seat harness, in the left side of the passenger compartment, below the front seat

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C308 (10 cavities)

Body harness to the center console harness, under the center console compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C309 (6 cavities)

Body harness to the center console harness, under the center console compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C316 (4 cavities)

Body harness to the left seat harness, in the left side of the passenger compartment, below the front seat

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Inline Harness Connector End Views in Wiring Systems

C317 (4 cavities)

Body harness to the right seat harness, in the right side of the passenger compartment, below the front seat

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Inline Harness Connector End Views in Wiring Systems

C320 (6 cavities)

Body harness to the left seat harness, in the left side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C321 (6 cavities)

Body harness to the right seat harness, in the right side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C322 (4 cavities)

Body harness to the right seat harness, in the right side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G201

In the right front of the passenger compartment, behind the kick panel

Power and Grounding Component Views in Wiring Systems

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G204

In the left front of the passenger compartment, behind the kick panel

Power and Grounding Component Views in Wiring Systems

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G302

Under the left front Seat, on seat pan bar 3

Power and Grounding Component Views in Wiring Systems

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P101

On the left rear of the engine compartment, near the strut tower

Harness Routing Views in Wiring Systems

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P500

On the front of the left front door jamb, near the door hinges

Harness Routing Views in Wiring Systems

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P600

On the front of the right front door jamb, near the door hinges

Harness Routing Views in Wiring Systems

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S101

In the body harness, approximately 14 cm (5.51 in) from P101

Harness Routing Views in Wiring Systems

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S200

In the body harness, approximately 8 cm (3.15 in) from P500

Harness Routing Views in Wiring Systems

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S211

In the body harness, approximately 20 cm (7.87 in) from C203

Harness Routing Views in Wiring Systems

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S306

In the body harness, approximately 5 cm (1.97 in) from the rear seat channel breakout

Harness Routing Views in Wiring Systems

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S311

In the body harness, approximately 35 cm (13.78 in) from the G302 breakout

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S312

In the body harness, approximately 24 cm (9.45 in) from the G302 breakout

Harness Routing Views in Wiring Systems

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S313

In the body harness, approximately 6.5 cm (2.56 in) from the G302 breakout

Harness Routing Views in Wiring Systems

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S321

In the lumbar harness, approximately 50 cm (19.69 in) from C322

Harness Routing Views in Wiring Systems

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S331

In the lumbar harness, approximately 50 cm (19.69 in) from C322

Harness Routing Views in Wiring Systems

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S344

In the console harness, approximately 4 cm (1.57 in) from the cigar lighter breakout

Harness Routing Views in Wiring Systems

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S346

In the console harness, approximately 12.5 cm (4.92 in) from the cigar lighter breakout

Harness Routing Views in Wiring Systems

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S348

In the left seat harness, approximately 4 cm (1.57 in) from the seat position sensors breakout

Harness Routing Views in Wiring Systems

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S349

In the left seat harness, approximately 10 cm (3.94 in) from the seat position sensors breakout

Harness Routing Views in Wiring Systems

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S351 (with A45)

In the left seat harness, approximately 4.5 cm (1.77 in) from the power seat motor breakout

Harness Routing Views in Wiring Systems

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S351 (DeVille without A45)

In the left seat harness, approximately 6 cm (2.36 in) into the left seat belt switch breakout

Harness Routing Views in Wiring Systems

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S351 (Eldorado without A45)

In the left seat harness, approximately 3 cm (1.18 in) from the C305 breakout

Harness Routing Views in Wiring Systems

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S352 (Eldorado)

In the left seat harness, approximately 7 cm (2.76 in) from the left power seat switch connector breakout

Harness Routing Views in Wiring Systems

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S352 (DeVille)

In the left seat harness, approximately 4 cm (1.57 in) from the left seat relay module breakout

Harness Routing Views in Wiring Systems

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S356 (Eldorado)

In the right seat harness, approximately 3 cm (1.18 in) from the motor breakout

Harness Routing Views in Wiring Systems

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S356 (DeVille)

In the right seat harness, approximately 4 cm (1.57 in) from the right seat relay module breakout

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S357 (Eldorado)

In the right seat harness, approximately 6 cm (0.39 in) into the C321 breakout

Harness Routing Views in Wiring Systems

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S357 (DeVille)

In the right seat harness, approximately 7 cm (2.76 in) from the motor breakout

Harness Routing Views in Wiring Systems

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S360

In the body harness, approximately 11.5 cm (4.53 in) from the P800 breakout

Harness Routing Views in Wiring Systems

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S363

In the right seat harness, under the right front seat

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S364

In the left seat harness, under the left front seat

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