GM Service Manual Online
For 1990-2009 cars only
Table 1: Two Speed Rear Axle Switch (Automatic Transmission)
Table 2: Two Speed Rear Axle Switch (Manual Transmission)
Table 3: Two Speed Rear Axle Shift Motor (Electric)
Table 4: Two Speed Rear Axle Shift Motor Relay

Two Speed Rear Axle Switch (Automatic Transmission)


Object Number: 237080  Size: CH

Connector Part Information

    • 6 Way
    • Female

Pin

Wire Color

Circuit No.

Function

1

BLK

152

Two Speed Axle Switch

2

GRY/BLK

151

Two Speed Axle Switch

3

--

--

Not Used

4

BLK/RED

154

Rheostatt

5

BRN

153

Ilumination

6

--

--

Not Used

Two Speed Rear Axle Switch (Manual Transmission)


Object Number: 339122  Size: CH

Connector Part Information

    • 3 Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

GRA/BLK

21

Two Speed Rear Axle Input

B

BLK

22

Two Speed Rear Axle Input

C

--

--

Not Used

Two Speed Rear Axle Shift Motor (Electric)


Object Number: 309547  Size: CH

Connector Part Information

    • 12020737
    • 3 Way M Weather Pack (BRN)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1469

Two Speed Rear Axle Shift Motor Feed-High

B

BLK

450

Ground

C

LT GRN

1468

Two Speed Rear Axle Shift Motor Feed-Low

Two Speed Rear Axle Shift Motor Relay


Object Number: 39685  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

30

BRN

241

Fuse Output-Ignition

85

BRN

241

Fuse Output-Ignition

86

GRA/BLK

1467

Two Speed Rear Axle Shift Motor Relay Output-Coil

87

LT BLU

1469

Two Speed Rear Axle Shift Motor Feed-High

87A

LT GRN

1468

Two Speed Rear Axle Shift Motor Feed-Low