GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 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: Transfer Case Relay
Table 4: Transfer Case Synchronizer

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 Switch Signal - Low

C

LT BLU

1296

4WD Relay Feed - Coil

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 Front Wheel Lock Telltale Feed

B

GRY/BLK

1570

Front Axle Actuator Output

C

BRN

241

Fuse Output - Ignition 3 - Type II Output

D

--

--

Not Used

E

BLK

150

Ground

Transfer Case Relay


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 Synchronizing Relay Feed - Coil

30

LT BLU

1296

4WD Relay Feed Coil

87A

BLK

150

Ground

86

GRY/BLK

1570

Front Axle Actuator Output

87

BLK/WHT

1695

4WD Front Wheel Lock Telltale Feed

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 Synchronizing Relay Feed Coil