GM Service Manual Online
For 1990-2009 cars only
Table 1: Brake Fluid Level Switch
Table 2: Brake Pedal Position (BPP) Sensor
Table 3: Park Brake Switch

Brake Fluid Level Switch


Object Number: 1989576  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BN/WH

0.3

Brake Warning Indicator Control

2

BK

0.3

Ground

Brake Pedal Position (BPP) Sensor


Object Number: 1989289  Size: CH

Connector Part Information

GT 150 Series

Pin

Wire Colour

Wire Size

Function

A

GY

0.5

5-Volt Reference

B

L-GN

0.5

Stop Lamp Switch Signal

C

BN/RD

0.5

Low Reference

Park Brake Switch


Object Number: 1989578  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

A

--

--

Not Used

B

OG/BK

0.85

Park Brake Switch Signal