GM Service Manual Online
For 1990-2009 cars
Table 1: Differential Lock Switch
Table 2: Rear Axle Air Shift Switch -- Two Speed
Table 3: Rear Axle Driver Control Switch -- Two Speed
Table 4: Rear Axle Shift Motor -- Two Speed
Table 5: Rear Axle Shift Relay -- Two Speed

Differential Lock Switch


Object Number: 258230  Size: CH

Connector Part Information

    • 12065402
    • 4 Way F, Metri-Pack 150 Series, Sealed (BRN)

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Used-Sealed

C

YEL/BLK

1007

Differential Lock Indicator Signal

D

BLK

150

Ground

Rear Axle Air Shift Switch -- Two Speed


Object Number: 258230  Size: CH

Connector Part Information

    • 12065298
    • 4 Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

241

Ignition 3 Voltage (RQ2)

A

BRN

341

Ignition 3 Voltage (RQ3)

B

GRY/BLK

1467

Two Speed Rear Axle Shift Motor Relay Control

C-D

--

--

Not Used

Rear Axle Driver Control Switch -- Two Speed


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 2 Way F, Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY/BLK

1467

Two Speed Rear Axle Shift Motor Relay Control

B

BLK

250

Ground

Rear Axle Shift Motor -- Two Speed


Object Number: 309547  Size: CH

Connector Part Information

    • 12020737
    • 3 Way M Weather Pack Tower Type (BRN)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1469

Two Speed Rear Axle Shift Motor Supply Voltage

B

BLK

450

Ground

C

LT GRN

1468

Two Speed Rear Axle Shift Motor Ground

Rear Axle Shift Relay -- Two Speed


Object Number: 39685  Size: CH

Connector Part Information

    • 12110539
    • 5 Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

30

BRN

241

Ignition 3 Voltage

85

BRN

241

Ignition 3 Voltage

86

GRY/BLK

1467

Two Speed Rear Axle Shift Motor Relay Control

87

LT BLU

1469

Two Speed Rear Axle Shift Motor Supply Voltage

87A

LT GRN

1468

Two Speed Rear Axle Shift Motor Ground