GM Service Manual Online
For 1990-2009 cars
Table 1: Automatic Transmission Engine Brake Switch
Table 2: Engine Brake Actuator Control Valve
Table 3: Engine Brake Relay
Table 4: Exhaust Brake Switch

Automatic Transmission Engine Brake Switch


Object Number: 635009  Size: CH

Connector Part Information

    • 12052641
    • 2 Way F, Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

650

Ground

B

BLK

650

Ground

Engine Brake Actuator Control Valve


Object Number: 68721  Size: CH

Connector Part Information

    • 15300027
    • 2 Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

1962

Engine Brake Solenoid Feed

B

BLK

650

Ground

Engine Brake Relay


Object Number: 39685  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

30

PPL

1146

Engine Brake Enable Signal

85

PPL

1146

Engine Brake Enable Signal

86

DK GRN

901

Exhaust Brake Enable (MTW/MX4)

86

PNK

1905

Retarder Disable Control (All Others)

87

--

--

Not Used

87A

BLK/WHT

1962

Engine Brake Solenoid Feed

Exhaust Brake Switch


Object Number: 39661  Size: CH

Connector Part Information

    • 12047786
    • 4 Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

1961

Engine Brake Switch Output

B

PPL

1146

Engine Brake Enable Signal

C

BLK/WHT

1962

Engine Brake Solenoid Feed

D

BLK

250

Ground