GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Relay Block

Left side of the dash, to the right of the IP fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector (DLC)

Lower left of the IP

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Lumbar Switch, LH

Left side seat, lower

Power Seat Component Views

Power Seat Connector End Views

Lumbar Switch, RH

Right side seat, lower

Power Seat Component Views

Power Seat Connector End Views

Power Recliner Motor, LH

In the left seat back, mounted to the frame

Power Seat Component Views

Power Seat Connector End Views

Power Recliner Motor, RH

In the right seat back, mounted to the frame

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Memory Module, LH

Under the left seat

Power Seat Component Views

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Seat Adjuster Memory Module, LH Connector C1 (18 Cavities)

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Memory Module, LH Connector C2 (8 Cavities)

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Memory Module, LH Connector C3 (2 Cavities)

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Switch, LH (8-Way w/ Memory) (12 Cavities)

On the left side of the LF lower seat cushion

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Switch, LH (6 or 8-Way w/o Memory)

On the left side of the LF lower seat cushion

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Switch, LH Connector C1 (6 or 8-Way w/o Memory) (8 Cavities)

On the left side of the LF lower seat cushion

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Power Seat Connector End Views

Seat Adjuster Switch, LH Connector C2 (6 or 8-Way w/o Memory) (2 Cavities)

On the left side of the LF lower seat cushion

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Power Seat Connector End Views

Seat Adjuster Switch, RH (6 or 8-Way w/o Memory)

On the right side of the RF lower seat cushion

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Switch, RH Connector C1 (6 or 8-Way w/o Memory) (8 Cavities)

On the right side of the RF lower seat cushion

Power Seat Component Views

Power Seat Connector End Views

Seat Adjuster Switch, RH Connector C2 (6 or 8-Way w/o Memory) (2 Cavities)

On the right side of the RF lower seat cushion

Power Seat Component Views

Power Seat Connector End Views

Seat Belt Switch - Front Passenger

Under the RH seat

Power Seat Component Views

Power Seat Connector End Views

Seat Front Height Motor, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Front Height Motor, RH

Under the right seat

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Power Seat Connector End Views

Seat Front Height Transducer, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Heater Module, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Heater Module, RH

Under the right seat

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Power Seat Connector End Views

Seat Lateral Motor, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Lateral Motor, RH

Under the right seat

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Power Seat Connector End Views

Seat Lateral Transducer, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Lumbar Support Actuator, RH

Under the right seat

--

Power Seat Connector End Views

Seat Lumbar Support Actuator, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Rear Height Motor, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Seat Rear Height Motor, RH

Under the right seat

--

Power Seat Connector End Views

Seat Rear Height Transducer, LH

Under the left seat

Power Seat Component Views

Power Seat Connector End Views

Underhood Fuse Block

On the top of the left inner wheelwell

Power and Grounding Component Views in Wiring Systems

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Underhood Fuse Block Connector C1 (68 Cavities) (Body)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

C302 (2 Cavities) (Utility w/ Power Seats, Non-Memory))

Left power recliner harness, under the left front seat

--

Inline Harness Connector End Views in Wiring Systems

C302 (4 Cavities) (Utility w/ Memory Power Seats)

Left power recliner harness, under the left front seat

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Inline Harness Connector End Views in Wiring Systems

C303 (2 Cavities) (Utility w/ Power Seats, Non-Memory)

Right power recliner harness, under the right front seat

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Inline Harness Connector End Views in Wiring Systems

C303 (4 Cavities) (Utility w/ Memory Power Seats)

Right power recliner harness, under the right front seat

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Inline Harness Connector End Views in Wiring Systems

C315 (6 Cavities) (4-Door Utility w/ Power Seats)

Body harness to RF seat pigtail connector, under the RF seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C317 (6 Cavities) (Utility)

Body harness to LF seat belt switch and power seats, under the LF seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G450 (Utility)

(CKT 1350) Body harness, in the LR body corner, near C403 to the tail lamp harness

Harness Routing Views in Wiring Systems

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P100

IP bulkhead pass-through, LR of the engine compartment, on the cowl

Harness Routing Views in Wiring Systems

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S304 (4-Door Utility)

(CKT 1440) Body harness, before the breakout to the RR and LR doors

Harness Routing Views in Wiring Systems

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S311 (w/ Power Seats)

(CKT 1440) In the LH power seat harness

--

--

S313 (w/ Power Seats)

(CKT 1350) LH power seat harness, 15 cm (5.9 in) from C317

--

--

S314 (w/ Heated Power Seats)

(CKT 2240) LH power seat harness, 20 cm (7.8 in) from C317

--

--

S315 (w/ Memory Power Seats)

(CKT 557, CKT 568, CKT 569) LH power seat harness, 9 cm (3.5 in) beyond the breakout to the seat memory module

--

--

S316 (w/ Memory Power Seats)

(CKT 557, CKT 568, CKT 569, CKT 570) LH power seat harness, 9 cm (3.5 in) beyond the breakout to the seat memory module

--

--

S320 (w/ Power Seats)

(CKT 1350) RH power seat harness, 15 cm (5.9 in) from C315

--

--

S321 (w/ Heated Power Seats

(CKT 2240) RH power seat harness, 20 cm (7.8 in) from C315

--

--

S427 (Utility)

(CKT 1350, CKT 1450) LR body harness, 7 cm (2.8 in) below the breakout to the left tail lamp connector C403

Harness Routing Views in Wiring Systems

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Splice Pack SP200

(CKT 41, CKT 241, CKT 341, CKT 817) Strapped to the body harness, in the right front of the IP, to the right of SP204

Harness Routing Views in Wiring Systems

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Splice Pack SP201

Body harness, to the left of the IP, below the IP fuse block, taped to the body harness, near P100

Harness Routing Views in Wiring Systems

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