GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 HVAC 🢒 HVAC - Manual 🢒 Hydraulic Brake Connector End Views
Connector 1: Brake Fluid Level Switch
Connector 2: Hydromax® Fuse
Connector 3: Hydromax® Relay
Connector 4: Park Brake Switch (Foot Operated)
Connector 5: Park Brake Switch (Hand Operated)
Connector 6: Power Brake (P/B) Booster Fluid Flow Switch
Connector 7: Power Brake (P/B) Booster Pump Motor

Brake Fluid Level Switch
Object Number: 1538760 Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F GT 150 Series, Sealed (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Brake Fluid Level Switch

Pin

Wire Color

Circuit No.

Function

A

BK/WH

351

Ground

B

PU

333

Brake Fluid Level Sensor Signal

Hydromax® Fuse
Object Number: 523591 Size: CH

Connector Part Information

  • OEM: 12092677
  • Service: 12167144
  • Description: 2-Way F Metri-Pack 630 Series, Sealed (BK)

Terminal Part Information

  • Pins: A
  • Terminal/Tray: 12033997/8
  • Core/Insulation Crimp: B/G
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)
  • Pins: B
  • Terminal/Tray: 12020156/8
  • Core/Insulation Crimp: C/D
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)

Hydromax® Fuse

Pin

Wire Color

Circuit No.

Function

A

OG

1470

Brake Booster Pump Motor Supply Voltage

B

L-GN

2674

Battery Positive Voltage

Hydromax® Relay
Object Number: 68749 Size: CH

Connector Part Information

  • OEM: 12124169
  • Service: 88987999
  • Description: 4-Way F Metri-Pack Mixed Series (BK)

Terminal Part Information

  • Pins: 30, 87
  • Terminal/Tray: 280756-4/7
  • Core/Insulation Crimp: F/5
  • Release Tool/Test Probe: 12094429/J-35616-22 (RD)
  • Pins: 85, 86
  • Terminal/Tray: JW-1630-2/21
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)

Hydromax® Relay

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 (Foot Operated)
Object Number: 856503 Size: CH

Connector Part Information

  • OEM: 8911256
  • Service: See Catalog
  • Description: 1-Way F (WH)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Park Brake Switch (Foot Operated)

Pin

Wire Color

Circuit No.

Function

A

L-BU

1134

Park Brake Switch Signal

Park Brake Switch (Hand Operated)
Object Number: 856501 Size: CH

Connector Part Information

  • OEM: 2977373
  • Service: See Catalog
  • Description: 2-Way F (GY)

Terminal Part Information

  • Terminal/Tray: 12124515/1
  • Core/Insulation Crimp: C/D
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)

Park Brake Switch (Hand Operated)

Pin

Wire Color

Circuit No.

Function

A

L-BU

1134

Park Brake Switch Signal

B

BK

750

Ground

Power Brake (P/B) Booster Fluid Flow Switch
Object Number: 646180 Size: CH

Connector Part Information

  • OEM: 12162198
  • Service: 12102620
  • Description: 2-Way F Metri-Pack 150 Series, Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 12124075/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12180559-1/J-35616-2A (GY)

Power Brake (P/B) Booster Fluid Flow Switch

Pin

Wire Color

Circuit No.

Function

A

L-BU/BK

1928

Brake Booster Fluid Flow Switch Signal

B

BK/WH

151

Ground

Power Brake (P/B) Booster Pump Motor
Object Number: 684800 Size: CH

Connector Part Information

  • OEM: 12085030
  • Service: 12167144
  • Description: 2-Way F Metri-Pack 150 Series, Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12033997/8
  • Core/Insulation Crimp: B/G
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)

Power Brake (P/B) Booster Pump Motor

Pin

Wire Color

Circuit No.

Function

A

OG

1470

Brake Booster Pump Motor Supply Voltage

B

BK

150

Ground