GM Service Manual Online
For 1990-2009 cars only
Table 1: Rear Axle Shift Actuator-Two Speed (HPZ)
Table 2: Rear Axle Shift Relay-Two Speed (HPZ)
Table 3: Rear Axle Shift Switch-Two Speed (Manual)
Table 4: Rear Axle Shift Switch-Two Speed (HR1/HR2)
Table 5: Rear Axle Shift Switch-Two Speed (Automatic)

Rear Axle Shift Actuator-Two Speed (HPZ)


Object Number: 875351  Size: CH

Connector Part Information

    • 12020737
    • 3-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

L-BU

1469

Low Reference

2

BK

350

Ground

3

L-GN

1466

Shift-Signal

Rear Axle Shift Relay-Two Speed (HPZ)


Object Number: 535919  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

30

BN

241

Ignition 3 Voltage

85

GY/BK

1467

Air Shift Switch Signal (Air Operated)

86

BN

241

Ignition 3 Voltage

87

L-BU

1469

Shift Motor Control - High Gear

87A

L-GN

1466

Shift Signal

Rear Axle Shift Switch-Two Speed (Manual)


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

GY/BK

1467

Air Shift Switch Signal (Air Operated)

B

BK

250

Ground

Rear Axle Shift Switch-Two Speed (HR1/HR2)


Object Number: 876326  Size: CH

Connector Part Information

    • 12065402
    • 2-Way F Metri-Pack 150 Series (BN)

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Available

C

GY/BK

1467

Air Shift Switch Signal (Air Operated)

D

BK

250

Ground

Rear Axle Shift Switch-Two Speed (Automatic)


Object Number: 40446  Size: CH

Connector Part Information

    • 12177194
    • 6-Way F Metri-Pack 150 Series (NA)

Pin

Wire Color

Circuit No.

Function

A

BK

750

Ground

B

BK

750

Ground

C

GY/BK

1467

Air Shift Switch Signal (Air Operated)

D

PK

239

Ignition 1 Voltage

E

BN

2509

Left Rear Park Lamps Supply Voltage/Left Rear Park Lamps and License Lamps Supply Voltage

F

GY/BK

1467

Air Shift Switch Signal (AIR OPERATED)