GM Service Manual Online
For 1990-2009 cars only
Table 1: Brake Fluid Level Switch
Table 2: Hydraulic Brake Inline Fuse
Table 3: HYDRO MAX Assembly-C1
Table 4: HYDRO MAX Assembly-C2
Table 5: HYDRO MAX Relay
Table 6: Park Brake Switch (C4/C5)
Table 7: Park Brake Switch (C6/C7/C8)

Brake Fluid Level Switch


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • 2-Way F Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

351

Ground

2

PU

333

Brake Fluid Level Sensor Signal

Hydraulic Brake Inline Fuse


Object Number: 523591  Size: CH

Connector Part Information

    • 12092677
    • 2-Way F Metri-Pack 630 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

OG

1470

Brake Booster Pump Motor Supply Voltage

B

L-GN

2674

Battery Positive Voltage

HYDRO MAX Assembly-C1


Object Number: 646180  Size: CH

Connector Part Information

    • 12162198
    • 2-Way F Metri-Pack 150 Series, Sealed (GY)

Pin

Wire Color

Circuit No.

Function

A

L-BU/BK

1928

Brake Booster Fluid Flow Switch Signal

B

BK

151

Ground

HYDRO MAX Assembly-C2


Object Number: 646180  Size: CH

Connector Part Information

    • 12162198
    • 2-Way F Metri-Pack 150 Series, Sealed (GY)

Pin

Wire Color

Circuit No.

Function

A

OG

1470

Brake Booster Pump Motor Supply Voltage

B

BK

151

Ground

HYDRO MAX Relay


Object Number: 68749  Size: CH

Connector Part Information

    • 12124169
    • 4-Way F Metri-Pack Mixed Series (BK)

Pin

Wire Color

Circuit No.

Function

30

OG

1470

Brake Booster Pump Motor Supply Voltage

85

TN

2660

Extended Travel Brake Switch Signal

86

L-BU/BK

1928

Brake Booster Fluid Flow Switch Signal

87

RD

2

Battery Positive Voltage

Park Brake Switch (C4/C5)


Object Number: 856503  Size: CH

Connector Part Information

    • 08911256
    • 1-Way F (NA)

Pin

Wire Color

Circuit No.

Function

A

L-BU

1134

Park Brake Switch Signal

Park Brake Switch (C6/C7/C8)


Object Number: 856501  Size: CH

Connector Part Information

    • 02977373
    • 2-Way F (GY)

Pin

Wire Color

Circuit No.

Function

A

L-BU

1134

Park Brake Switch Signal

B

BK

750

Ground