GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 GMC K Pickup - 4WD 🢒 Driveline/Axle 🢒 Transfer Case - BW 4401 (Two Speed Manual) 🢒 Transfer Case Control Connector End Views
Table 1: Transfer Case Switch
Table 2: Front Axle Actuator
Table 3: Timer Logic and Relay Module
Table 4: Transfer Case Synchronizer
Table 5: 4WD Indicator Lamp

Transfer Case Switch


Object Number: 62453 Size: CH

Connector Part Information
    • 12059595
    • 3F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

241

Fuse Output - Ignition 3 Type III Fuse

B

GRY/BLK

1694

4WD Low Range Engaged Output

C

LT BLU

1296

4WD Request Output

Front Axle Actuator


Object Number: 365944 Size: CH

Connector Part Information
    • 12077591
    • ASM 5F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

1695

4WD Engaged Output

B

GRY/BLK

1570

Front Axle Engage Request

C

BRN

241

Fuse Output - Ignition 3 - Type II Output

D

--

--

Not Used

E

BLK

150

Ground

Timer Logic and Relay Module


Object Number: 39685 Size: CH

Connector Part Information
    • 12110539
    • 5F Metri-Pack 280 Series, (BLK)

Pin

Wire Color

Circuit No.

Function

85

RED

1297

4WD Synchronizer Feed

30

LT BLU

1296

4WD Request Signal

87A

BLK

150

Ground

86

GRy/BLK

1570

Front Axle Actuator Control

87

BLK/WHT

1695

4WD Engaged Signal

Transfer Case Synchronizer


Object Number: 287976 Size: CH

Connector Part Information
    • 12015791
    • 1 W/P (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED

1297

4WD Synchronizer Feed

4WD Indicator Lamp


Object Number: 365949 Size: CH

Connector Part Information
    • 12084388
    • Type W-2 Lamp Socket

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BLK/WHT

1695

4WD engaged feed