GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 Yukon Denali 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 HVAC Connector End Views
Table 1: A/C Compressor Clutch
Table 2: A/C High Pressure Switch
Table 3: A/C Low Pressure Switch (ALL)
Table 4: A/C High Pressure Recirculation Switch
Table 5: Air Temperature Actuator
Table 6: Air Temperature Actuator - Auxiliary
Table 7: Blower Motor
Table 8: Blower Motor Resistor Assembly
Table 9: Blower Motor Resistor Assembly - Auxiliary - C1
Table 10: Blower Motor Resistor Assembly - Auxiliary - C2
Table 11: Blower Motor Switch - C2 (Part of HVAC Control Module)
Table 12: HVAC Control Module - C1
Table 13: HVAC Control Processor - Auxiliary (Suburban/Utility-w/o Sunroof)
Table 14: HVAC Control Assembly - Front Auxiliary (A/C Only)
Table 15: HVAC Control Assembly - Rear Auxiliary (A/C Only)
Table 16: HVAC Control Assembly - Front Auxiliary ( w/ Sunroof - Suburban/Yukon XL)
Table 17: HVAC Control Assembly - Front Auxiliary (w/o Sunroof - w/Heat and A/C)
Table 18: HVAC Control Assembly - Rear Auxiliary (w/o Sunroof - w/Heat and A/C)
Table 19: Mode Actuator
Table 20: Mode Actuator - Auxiliary
Table 21: Recirculation Actuator

A/C Compressor Clutch


Object Number: 684852 Size: CH

Connector Part Information
    • 12162017
    • 2-Way F Metri-Pack 150 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

550

Ground

B

DK GRN

59

A/C Compressor Clutch Supply Voltage

A/C High Pressure Switch


Object Number: 366093 Size: CH

Connector Part Information
    • 15317968
    • 2-Way F Micro-Pack 100 W Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

203

A/C Request Signal

B

DK GRN/

WHT

2523

A/C Request Signal

A/C Low Pressure Switch (ALL)


Object Number: 537107 Size: CH

Connector Part Information
    • 12052644
    • 2-Way F Metri-Pack 150 Series ( GRY)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

603

A/C Low Pressure Switch Signal

B

BLK

550

Ground

A/C High Pressure Recirculation Switch


Object Number: 684829 Size: CH

Connector Part Information
    • 12124037
    • 2-Way F Metri-Pack 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

604

A/C High Pressure Recirculation Switch Signal

B

BLK

150

Ground

Air Temperature Actuator


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5

BRN

341

Ignition 3 Voltage

6

DK BLU

1199

Air Temperature Door Control

7

BLK

2450

Ground

8

--

--

Not Used

9

LT BLU

733

Temperature Door Position Signal

10

GRY

598

5 Volt Reference

Air Temperature Actuator - Auxiliary


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BLK

1450

Ground

8

WHT/BLK

1236

Auxiliary Air Temperature Door Control

9

--

--

Not Used

10

BRN

541

Ignition 3 Voltage

Blower Motor


Object Number: 62488 Size: CH

Connector Part Information
    • 12084957
    • 2-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

65

Blower Motor Supply Voltage

B

BLK

1050

Ground

Blower Motor Resistor Assembly


Object Number: 73146 Size: CH

Connector Part Information
    • 12052854
    • 7-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

63

Medium 1 Blower Motor Control

B

YEL

60

Low Blower Motor Control

C

PPL

73

Medium 3 Blower Motor Control

D

LT BLU

72

Medium 2 Blower Motor Control

E

BLK

1050

Ground

F

ORN

52

High Speed Blower Motor Control

G

ORN

540

Battery Positive Voltage

Blower Motor Resistor Assembly - Auxiliary - C1


Object Number: 68737 Size: CH

Connector Part Information
    • 12129489
    • 3-Way F Metri-Pack 280 Series Flexlock (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

1926

Auxiliary Blower Motor Low Speed Control

B

RED

1925

Auxiliary Blower Motor Medium Speed Control

C

WHT

1924

Auxiliary Blower Motor High Speed Control

Blower Motor Resistor Assembly - Auxiliary - C2


Object Number: 62450 Size: CH

Connector Part Information
    • 12052856
    • 4-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1450

Ground

B

ORN

1740

Battery Positive Voltage

C

BRN

541

Ignition 3 Voltage (w/o Sunroof-w/Heat and A/C)

D

BRN

541

Ignition 3 Voltage

Blower Motor Switch - C2 (Part of HVAC Control Module)


Object Number: 62469 Size: CH

Connector Part Information
    • 12064998
    • 8-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

71

Off Blower Motor Control

B

BRN

141

Ignition 3 Voltage

C

ORN

52

High Blower Motor Control

D

--

--

Not Used

E

PPL

73

Medium 3 Blower Motor Control

F

LT BLU

72

Medium 2 Blower Motor Control

G

TAN

63

Medium 1 Blower Motor Control

H

YEL

60

Low Blower Motor Control

HVAC Control Module - C1


Object Number: 73151 Size: CH

Connector Part Information
    • 12064799
    • 12-Way F Micro-Pack 100 (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

71

Off Blower Motor Control

B

WHT

119

Mode Door Control

C

BLK

2450

Ground

D

DK GRN

1614

Recirculation Door Control

E

GRY

8

Instrument Panel Lamp Supply Voltage - 1

F

DK BLU

1199

Air Temperature Door Control

G

LT BLU

733

Air Temperature Door Position Signal

H

GRY

598

5 Volt Reference

J

WHT

193

Rear Defog Relay Control

K

BRN

341

Ignition 3 Voltage

L

LT BLU

203

A/C Request Signal

M

RED

708

Mode Door Position Signal

HVAC Control Processor - Auxiliary (Suburban/Utility-w/o Sunroof)


Object Number: 328486 Size: CH

Connector Part Information
    • 12040747
    • 12-Way P/C Edgeboard - STD (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

733

Air Temperature Door Position Signal

B

WHT/BLK

1236

Air Temperature Door Control - Auxiliary

C

DK BLU

1646

Air Temperature Door Position Signal - Auxiliary

D

LT BLU

2823

Mode Signal - Auxiliary Rear

E

LT BLU

2822

Mode Signal - Auxiliary Front

F

WHT

454

Mode Door Control - Auxiliary

G

--

--

Not Used

H

BLK

1450

Ground

J

BRN

541

Ignition 3 Voltage

K

--

--

Not Used

L

GRY

778

Blower Motor Speed Control - Auxiliary

M

ORN

1923

Rear Auxiliary Enable Control

HVAC Control Assembly - Front Auxiliary (A/C Only)


Object Number: 73152 Size: CH

Connector Part Information
    • 12110259
    • 16-Way F Micro-Pack 100 Series (GRN)

Pin

Wire Color

Circuit No.

Function

A1

GRY

8

Instrument Panel Lamp Supply Voltage - 1

A2-A3

--

--

Not Used

A4

ORN

1923

Rear Auxiliary Enable Control

A5

WHT

1924

Auxiliary Blower Motor High [position X] Speed Control

A6

RED

1925

Auxiliary Blower Motor Medium [position X] Speed Control

A7

DK BLU

1926

Auxiliary Blower Motor Low [position X] Speed Control

A8

BLK

1450

Ground

B1-B8

--

--

Not Used

HVAC Control Assembly - Rear Auxiliary (A/C Only)


Object Number: 356307 Size: CH

Connector Part Information
    • 12092632
    • 16-Way F Micro-Pack 100 Series (RED)

Pin

Wire Color

Circuit No.

Function

A1

GRY

8

Instrument Panel Lamp Supply Voltage - 1

A2-A4

--

--

Not Used

A5

WHT

1924

Auxiliary Blower Motor High Speed Control

A6

RED

1925

Auxiliary Blower Motor Medium Speed Control

A7

DK BLU

1926

Auxiliary Blower Motor Low Speed Control

A8

BLK

1450

Ground

B1

GRY

8

Instrument Panel Lamp Supply Voltage - 1

B2-B3

--

--

Not Used

B4

ORN

1923

Rear Auxiliary Enable Control

B5

WHT

1924

Auxiliary Blower Motor High Speed Control

B6

RED

1925

Auxiliary Blower Motor Medium Speed Control

B7

DK BLU

1926

Auxiliary Blower Motor Low Speed Control

B8

BLK

1450

Ground

HVAC Control Assembly - Front Auxiliary ( w/ Sunroof - Suburban/Yukon XL)


Object Number: 73152 Size: CH

Connector Part Information
    • 12092629
    • 16-Way F Micro-Pack 100 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A1

GRY

8

Instrument Panel Lamp Supply Voltage - 1

A2

BRN

541

Ignition 3 Voltage

A3

WHT

454

Mode Door Control - Auxiliary

A4

--

--

Not Used

A5

WHT

1924

Auxiliary Blower Motor High Speed Control

A6

RED

1925

Auxiliary Blower Motor Medium Speed Control

A7

DK BLU

1926

Auxiliary Blower Motor Low Speed Control

A8

BLK

1450

Ground

B1-B2

--

--

Not Used

B3

WHT

1236

Air Temperature Door Control - Auxiliary

B4

BLK

1450

Ground

B5-B7

--

--

Not Used

B8

BLK

1450

Ground

HVAC Control Assembly - Front Auxiliary (w/o Sunroof - w/Heat and A/C)


Object Number: 73152 Size: CH

Connector Part Information
    • 12084945
    • 16-Way F Micro-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

GRY

8

Instrument Panel Lamp Supply Voltage - 1

A2

--

--

Not Used

A3

LT BLU

2822

Mode Signal - Auxiliary Front

A4

ORN

1923

Rear Auxiliary Enable Control

A5

WHT

1924

Auxiliary Blower Motor High Speed Control

A6

RED

1925

Auxiliary Blower Motor Medium Speed Control

A7

DK BLU

1926

Auxiliary Blower Motor Low Speed Control

A8-B1

--

--

Not Used

B2

BRN

541

Ignition 3 Voltage

B3

LT BLU

733

Air Temperature Door Position Signal

B4-B7

--

--

Not Used

B8

BLK

1450

Ground

HVAC Control Assembly - Rear Auxiliary (w/o Sunroof - w/Heat and A/C)


Object Number: 73152 Size: CH

Connector Part Information
    • 12092629
    • 16-Way F Micro-Pack 100 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A1

GRY

8

Instrument Panel Lamp Supply Voltage - 1

A2

BRN

541

Ignition 3 Voltage

A3

WHT

2823

Mode Signal - Auxiliary Rear

A4

--

--

Not Used

A5

WHT

1924

Auxiliary Blower Motor High Speed Control

A6

RED

1925

Auxiliary Blower Motor Medium Speed Control

A7

DK BLU

1926

Auxiliary Blower Motor Low Speed Control

A8

BLK

1450

Ground

B1

GRY

8

Instrument Panel Lamp Supply Voltage - 1

B2

BRN

541

Ignition 3 Voltage

B3

WHT/BLK

1646

Air Temperature Door Position Signal - Auxiliary

B4

GRY

778

Blower Motor Control - Auxiliary

B5

WHT

1924

Auxiliary Blower Motor High Speed Control

B6

RED

1925

Auxiliary Blower Motor Medium Speed Control

B7

DK BLU

1926

Auxiliary Blower Motor Low Speed Control

B8

BLK

1450

Ground

Mode Actuator


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5

BRN

341

Ignition 3 Voltage

6

WHT

119

Mode Door Control

7

BLK

2450

Ground

8

--

--

Not Used

9

RED

708

Mode Door Position Signal

10

GRY

598

5 Volt Reference

Mode Actuator - Auxiliary


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BLK

1450

Ground

8

WHT

454

Mode Door Control

9

--

--

Not Used

10

BRN

541

Ignition 3 Voltage

Recirculation Actuator


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5

BRN

341

Ignition 3 Voltage

6

DK GRN

1614

Recirculation Door Control

7

BLK

2450

Ground

8-10

--

--

Not Used