GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Combination (Multifunction) Switch

On the Steering Column

Horn Component Views

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Combination (Multifunction) Switch C1 (22 cavities)

In the lower IP harness to the steering column combination (multifunction) switch

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Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges, and Console

Horn Relay

In the center of the lower IP, behind the panel, in the relay center 2

Horn Component Views

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Horn Switch

In the steering wheel

Horn Component Views

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Horn, A-Note (High)

Behind the left side of the front bumper impact bar

Horn Component Views

Horn Connector End Views

Horn, A-Note (High) (Dual Electric Horns)

Behind the left side of the front bumper impact bar

Horn Component Views

Horn Connector End Views

Horn, F-Note (Low) (Dual Electric Horns)

Behind the left side of the front bumper impact bar

Horn Component Views

Horn Connector End Views

IP Fuse Block

In the right top of the IP, under the access panel

Power and Grounding Component Views in Wiring Systems

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Relay Center 2

In the center of the lower IP, behind the panel

Horn Component Views

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C101 (2 cavities) (Dual Electric Horns)

In the front turn signal harness to the dual electric horn harness, behind the left side of the front bumper impact bar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C105 (5 cavities)

In the front turn signal harness, to the front chassis harness, on the left of the #1 crossmember

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (56 cavities)

In the lower IP harness, to the front chassis harness, in the left center of the cab interface connector housing

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G107

From the front chassis harness, on the left frame rail, approximately 25 cm (9.8 in) to the rear of the front shock absorber

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P100

On the front chassis harness, under the hood, in the center of the bulkhead, in the cab interface connector housing

Harness Routing Views in Wiring Systems

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S100 (Dual Electric Horns)

In the dual electric horn harness, behind the left side of the front bumper impact bar, approximately 17 cm (6.7 in) from the rear horn connector

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S101 (Dual Electric Horns)

In the dual electric horn harness, behind the left side of the front bumper impact bar, approximately 21 cm (8.3 in) from the rear horn connector

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S105

In the front turn signal harness, in the main branch, approximately 40 cm (15.7 in) from the left turn signal

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S219

In the upper IP harness, to the right of the fuse block harness breakout

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S302

In the lower IP harness

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