GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Savana 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Heater Blower Controls Connector End Views
Table 1: Auxiliary Blower Motor Connector
Table 2: Auxiliary Blower Motor Relay, Low/Medium/High Connectors
Table 3: Auxiliary Blower Motor Resistor Connector
Table 4: Auxiliary Blower Motor Switch Connector
Table 5: Blower Motor Resistor/Relay Connector
Table 6: Heater and A/C Controller C1 Connector
Table 7: Heater and A/C Controller C2 Connector
Table 8: Heater and A/C Controller C3 Connector

Auxiliary Blower Motor Connector


Object Number: 258847 Size: CH

Connector Part Information
    • 12077900
    • 2F M/P 280 SLD (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

YEL

1172

Auxiliary Blower Motor Feed

Auxiliary Blower Motor Relay, Low/Medium/High Connectors


Object Number: 309518 Size: CH

Connector Part Information
    • 12129715
    • 6F M/P 280 FLXLK (MD GRY)

Pin

Wire Color

Circuit No.

Function

A1

WHT

1924

Auxiliary HVAC Switch Output (High)

A1

RED

1925

Auxiliary HVAC Switch Output (Medium)

A1

DK BLU

1926

Auxiliary HVAC Switch Output (Low)

A2

YEL

1172

Auxiliary Blower Motor Feed (High)

A2

LT BLU

1072

Auxiliary Blower Motor Feed (Medium)

A2

YEL

1176

Auxiliary Blower Motor Feed (Low)

B1-B2

--

--

Not Used

C1

RED

1542

Fuse Output - Battery - Type II Fuse

C2

BRN

341

Fuse Output - IGN 3 - Type III Fuse

Auxiliary Blower Motor Resistor Connector


Object Number: 73229 Size: CH

Connector Part Information
    • 12129566
    • 4F M/P 280 SLD (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

YEL

1176

Auxiliary Blower Motor Resistor Output (Low)

B

--

--

Not Used

C

LT BLU

1072

Auxiliary Blower Motor Resistor Output (Medium)

D

YEL

1172

Auxiliary Blower Motor Feed

Auxiliary Blower Motor Switch Connector


Object Number: 62456 Size: CH

Connector Part Information
    • 12064752
    • 6F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

8

Instrument Panel Lamp Feed

B

BLK

150

Ground

C

--

--

Not Used

D

ORN

52

Blower Switch Output (High)

E

YEL

60

Blower Switch Output (Low)

F

TAN

63

Blower Switch Output (Medium 1)

Blower Motor Resistor/Relay Connector


Object Number: 68778 Size: CH

Connector Part Information
    • 12160746
    • ASM 6F M/P 280 FLXLK SLD (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

542

Fuse Output Battery - Type II Fuse

B

ORN

52

Blower Switch Output (High)

C

BLK

150

Ground

D

TAN

63

Blower Switch Output (Medium 1)

E

YEL

60

Blower Switch Output (Low)

F

LT BLU

72

Blower Switch Output (Medium 2)

Heater and A/C Controller C1 Connector


Object Number: 68737 Size: CH

Connector Part Information
    • 12129489
    • 3F M/P 280 TL FLXLK (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

119

Mode Switch Output

B

BLK

150

Ground

C

GRY

8

Instrument Panel Lamp Feed

Heater and A/C Controller C2 Connector


Object Number: 62469 Size: CH

Connector Part Information
    • 12064998
    • 8F M/P 280 CLIP SLOT (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

60

Blower Switch Output (Low)

B

TAN

63

Blower Switch Output (Medium 1)

C

LT BLU

72

Blower Switch Output (Medium 2)

D

ORN

52

Blower Switch Output (High)

E

BRN

141

Fuse Output - IGN 3 - Type III Fuse

F

LT BLU

733

AIR Temperature Valve Position Sensor Signal

G

WHT

119

Mode Switch Output

H

LT GRN

66

AIR Conditioning Switch Output

Heater and A/C Controller C3 Connector


Object Number: 62450 Size: CH

Connector Part Information
    • 12052856
    • 4F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1440

Fuse Output - Battery - Type III Fuse

B

BRN

141

Fuse Output - IGN 3 - Type III Fuse

C

BLK

150

Ground

D

ORN

267

Heated Mirror Element Feed