GM Service Manual Online
For 1990-2009 cars only
Connector 1: A/C Compressor Clutch (LH2)
Connector 2: A/C Compressor Clutch (LY7)
Connector 3: A/C Refrigerant Pressure Sensor
Connector 4: Air Quality Sensor (AQS) - (K14)
Connector 5: Air Temperature Actuator - Left
Connector 6: Air Temperature Actuator - Right
Connector 7: Ambient Air Temperature Sensor
Connector 8: Blower Motor
Connector 9: Blower Motor - Auxiliary (C57)
Connector 10: Blower Motor Control Module C1
Connector 11: Blower Motor Control Module C2
Connector 12: Blower Motor Resistor Assembly - Auxiliary (C57)
Connector 13: Blower Motor Switch - Front Auxiliary (C57)
Connector 14: Blower Motor Switch - Rear Auxiliary (C57)
Connector 15: Evaporator Temperature Sensor
Connector 16: HVAC Control Module C1
Connector 17: HVAC Control Module C2
Connector 18: HVAC Control Module C3
Connector 19: Inside Air Temperature Sensor
Connector 20: Mode Actuator
Connector 21: Recirculation Actuator
Connector 22: Sunload/Ambient Light Sensor

A/C Compressor Clutch (LH2)


Object Number: 897985  Size: CH

Connector Part Information

  • OEM: 7282-5548-30
  • Service: 88953303
  • Description: 2-Way M YESC Weather Pack (BK)

Terminal Part Information

  • Terminal/Tray: 7114-4102-08/9
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094430/J-35616-3 (GY)

A/C Compressor Clutch (LH2)

Pin

Wire Color

Circuit No.

Function

1

D-GN

59

A/C Compressor Clutch Supply Voltage

2

BK

1550

Ground

A/C Compressor Clutch (LY7)


Object Number: 897985  Size: CH

Connector Part Information

  • OEM: 7282-5548-30
  • Service: 88953303
  • Description: 2-Way M YESC Weather Pack (BK)

Terminal Part Information

  • Terminal/Tray: 7114-4102-08/9
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094430/J-35616-3 (GY)

A/C Compressor Clutch (LY7)

Pin

Wire Color

Circuit No.

Function

1

D-GN

59

A/C Compressor Clutch Supply Voltage

2

BK

750

Ground

A/C Refrigerant Pressure Sensor


Object Number: 1519475  Size: CH

Connector Part Information

  • OEM: 15477863
  • Service: 88988301
  • Description: 3-Way F GT 150 Series, Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

A/C Refrigerant Pressure Sensor

Pin

Wire Color

Circuit No.

Function

1

TN

5514

Low Reference

2

GY

2700

5-Volt Reference

3

OG/BK

380

A/C Refrigerant Pressure Sensor Signal

Air Quality Sensor (AQS) - (K14)


Object Number: 1455873  Size: CH

Connector Part Information

  • OEM: 7283-7062-40
  • Service: 88988394
  • Description: 6-Way F 090 II Class III Series, Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 7116-4025/11
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15313892/J-35616-18 (BK)

Air Quality Sensor (AQS) - (K14)

Pin

Wire Color

Circuit No.

Function

1

YE

61

Low Reference

2

PU/WH

5203

Air Quality Sensor Signal

3

PK

1439

Ignition 1 Voltage

4

L-GN/WH

6845

Air Quality NOX Sensor Signal

5

--

--

Not Used

6

BK

250

Ground

Air Temperature Actuator - Left


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F 040 III (BK)

Terminal Part Information

  • Pins: 1, 3, 5
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Air Temperature Actuator - Left

Pin

Wire Color

Circuit No.

Function

1

GY

705

5-Volt Reference

2

YE

61

Low Reference

3

L-BU

733

Driver Air Temperature Door Position Signal

4

YE

1791

Driver Air Temperature Door Control A

5

D-BU

1199

Driver Air Temperature Door Control B

Air Temperature Actuator - Right


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F 040 III (BK)

Terminal Part Information

  • Pins: 1, 3, 5
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Air Temperature Actuator - Right

Pin

Wire Color

Circuit No.

Function

1

YE

61

Low Reference

2

GY

705

5-Volt Reference

3

D-BU

1646

Passenger Air Temperature Door Position

4

GY/BK

2778

Passenger Air Temperature Door Control A

5

WH/BK

1236

Passenger Air Temperature Door Control B

Ambient Air Temperature Sensor


Object Number: 684793  Size: CH

Connector Part Information

  • OEM: 12052642
  • Service: 12101856
  • Description: 2-Way F Metri-Pack 150 Series, Sealed (L-GN)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Ambient Air Temperature Sensor

Pin

Wire Color

Circuit No.

Function

A

L-GN-BK

735

Ambient Air Temperature Sensor Signal

B

YE

61

Low Reference

Blower Motor


Object Number: 1385124  Size: CH

Connector Part Information

  • OEM: 6098-1104
  • Service: 88988637
  • Description: 2-Way F CONN TS 312 Unsealed (NA)

Terminal Part Information

  • Terminal/Tray: 8100-2493/6
  • Core/Insulation Crimp: F/B
  • Release Tool/Test Probe: 12094430/J-35616-44 (YE)

Blower Motor

Pin

Wire Color

Circuit No.

Function

1

OG

374

Auxiliary Blower Motor Speed Control

2

PU

65

Blower Motor Supply Voltage

Blower Motor - Auxiliary (C57)


Object Number: 1411605  Size: CH

Connector Part Information

  • OEM: 6098-0325
  • Service: 89046848
  • Description: 2-Way F TS 187 Series (WH)

Terminal Part Information

  • Terminal/Tray: 7116-4032/11
  • Core/Insulation Crimp: A/G
  • Release Tool/Test Probe: 12094430/J-35616-40 (BU)

Blower Motor - Auxiliary (C57)

Pin

Wire Color

Circuit No.

Function

1

OG

1052

Auxiliary Blower Motor Supply Voltage

2

PU

65

Blower Motor Supply Voltage

Blower Motor Control Module C1


Object Number: 1817814  Size: CH

Connector Part Information

  • OEM: 15226103
  • Service: 88988507
  • Description: 2-Way F Kaizen 6.3 (GY)

Terminal Part Information

  • Terminal/Tray: 7116-4122-02/10
  • Core/Insulation Crimp: A/B
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)

Blower Motor Control Module C1

Pin

Wire Color

Circuit No.

Function

1

PU

65

Blower Motor Supply Voltage

2

OG

374

Auxiliary Blower Motor Speed Control

Blower Motor Control Module C2


Object Number: 1798802  Size: CH

Connector Part Information

  • OEM: 15226104
  • Service: 88988512
  • Description: 6-Way F Hybrid (BK)

Terminal Part Information

  • Pins: 3
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: 5-6
  • Terminal/Tray: 7116-4122-02/10
  • Core/Insulation Crimp: A/B
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)

Blower Motor Control Module C2

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

GY/BK

754

Blower Motor Speed Control

4

--

--

Not Used

5

BK

450

Ground

6

L-BU

188

Blower Motor Resistor Assembly Supply Voltage

Blower Motor Resistor Assembly - Auxiliary (C57)


Object Number: 1411606  Size: CH

Connector Part Information

  • OEM: 6098-0514
  • Service: 89046850
  • Description: 4-Way F CONN 187 (WH)

Terminal Part Information

  • Terminal/Tray: 7116-4032/11
  • Core/Insulation Crimp: A/G
  • Release Tool/Test Probe: 12094430/J-35616-40 (BU)

Blower Motor Resistor Assembly - Front Auxiliary (C57)

Pin

Wire Color

Circuit No.

Function

1

OG

1052

Auxiliary Blower Motor Supply Voltage

2

TN

63

Blower Motor Medium 1 Control

3

L-BU

72

Medium 2 Blower Motor Control

4

YE

60

Blower Motor Low Control

Blower Motor Switch - Front Auxiliary (C57)


Object Number: 808876  Size: CH

Connector Part Information

  • OEM: 12015416
  • Service: 12117340
  • Description: 8-Way F Metri-Pack 280 Series (NA)

Terminal Part Information

  • Pins: A, H
  • Terminal/Tray: 12034046/2
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: B-G
  • Terminal/Tray: 12015858/4
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Blower Motor Switch - Auxiliary (C57)

Pin

Wire Color

Circuit No.

Function

A

BK

1050

Ground

B

PU/WH

5264

Rear Auxiliary Mode Door Control

C

BK

1050

Ground

D

YE

60

Blower Motor Low Control

E

TN

63

Blower Motor Medium 1 Control

F

L-BU

72

Medium 2 Blower Motor Control

G

OG

1052

Auxiliary Blower Motor Supply Voltage

H

GY

8

Instrument Panel Lamp Supply Voltage

Blower Motor Switch - Rear Auxiliary (C57)


Object Number: 808876  Size: CH

Connector Part Information

  • OEM: 12015416
  • Service: 12117340
  • Description: 8-Way F Metri-Pack 280 Series (NA)

Terminal Part Information

  • Pins: A, H
  • Terminal/Tray: 12034046/2
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: C-G
  • Terminal/Tray: 12015858/4
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Blower Motor Switch - Rear Auxiliary (C57)

Pin

Wire Color

Circuit No.

Function

A

BK

1050

Ground

B

--

--

Not Used

C

PU/WH

5264

Rear Auxiliary Mode Door Control

D

YE

60

Blower Motor Low Control

E

TN

63

Blower Motor Medium 1 Control

F

L-BU

72

Medium 2 Blower Motor Control

G

OG

1052

Auxiliary Blower Motor Supply Voltage

H

GY

8

Instrument Panel Lamp Supply Voltage

Evaporator Temperature Sensor


Object Number: 826317  Size: CH

Connector Part Information

  • OEM: 7123-2820
  • Service: See Catalog
  • Description: 2-Way F Yazaki (CL)

Terminal Part Information

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

Evaporator Temperature Sensor

Pin

Wire Color

Circuit No.

Function

1

D-GN/WH

731

Evaporator Temperature Sensor Signal

2

YE

61

Low Reference

HVAC Control Module C1


Object Number: 1664585  Size: CH

Connector Part Information

  • OEM: 7283-4544-30
  • Service: See Catalog
  • Description: 18-Way F Kaizen 0.64 (BK)

Terminal Part Information

  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module C1

Pin

Wire Color

Circuit No.

Function

1

GY

705

5-Volt Reference

2

YE

1649

Blower Motor Relay Supply Voltage

3

WH

193

Rear Defog Relay Control

4

D-GN

5060

Low Speed GMLAN Serial Data

5

D-GN

5060

Low Speed GMLAN Serial Data

6

--

--

Not Used

7

GY/BK

754

Blower Motor Speed Control

8

--

--

Not Used

9

RD/WH

2440

Battery Positive Voltage

10

YE

61

Low Reference

11

BK/WH

351

Ground

12-17

--

--

Not Used

18

BN

141

Ignition 3 Voltage

HVAC Control Module C2


Object Number: 1664586  Size: CH

Connector Part Information

  • OEM: 7283-9081
  • Service: See Catalog
  • Description: 16-Way F Kaizen 0.64 (WH)

Terminal Part Information

  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module C2

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

L-BU

733

Air Temperature Door Position Signal

3

YE/BK

1814

Lower Mode Door Position Signal

4

GY

1548

Passenger Sunload Sensor Signal

5

L-BU/BK

590

Driver Sunload Sensor Signal

6

GY

731

A/C Refrigerant Low Temperature Sensor Signal

7

L-GN/BK

735

Ambient Air Temperature Sensor Signal

8

D-GN

734

Inside Air Temperature Sensor Signal

9

--

--

Not Used

10

D-BU

1646

Passenger Air Temperature Door Position Signal

11

PU

1838

Recirculation Door Position Signal

12

L-GN/WH

6845

Air Quality NOX Sensor Signal (K14)

13

PU/WH

5203

Air Quality Sensor Signal (K14)

14-16

--

--

Not Used

HVAC Control Module C3


Object Number: 1664588  Size: CH

Connector Part Information

  • OEM: 7283-4548-60
  • Service: See Catalog
  • Description: 18-Way F Kaizen 0.64 (GN)

Terminal Part Information

  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module C3

Pin

Wire Color

Circuit No.

Function

1

PU/WH

6816

Indicator Dimming Control

2

YE

6817

LED Backlight Dimming Control

3

--

--

Not Used

4

GY/BK

2778

Right Air Temperature Door Control A

5

D-BU

1199

Driver Air Temperature Door Control

6

TN/BK

2274

Recirculation Door Control Circuit

7

YE

1318

Mode Door Control

8-12

--

--

Not Used

13

WH/BK

1236

Passenger Air Temperature Door Control B

14

YE

1791

Low Reference

15

D-GN

1614

Recirculation Door Control

16

TN

2273

Mode Door Control

17-18

--

--

Not Used

Inside Air Temperature Sensor


Object Number: 1853504  Size: CH

Connector Part Information

  • OEM: 7283-6160
  • Service: 88953305
  • Description: 2-Way F 090 II (WH)

Terminal Part Information

  • Terminal/Tray: 7116-4020/11
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-18 (BK)

Inside Air Temperature Sensor

Pin

Wire Color

Circuit No.

Function

1

D-GN

734

Inside Air Temperature Sensor Signal

2

YE

61

Low Reference

Mode Actuator


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F 040 III (BK)

Terminal Part Information

  • Pins: 1, 3, 5
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Mode Actuator

Pin

Wire Color

Circuit No.

Function

1

YE

61

Low Reference

2

GY

705

5-Volt Reference

3

YE/BK

1814

Mode Door Position Signal

4

PK

1318

Mode Door Control B

5

BN

2273

Mode Door Control A

Recirculation Actuator


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F 040 III (BK)

Terminal Part Information

  • Terminal/Tray: 7116-4231-08/14
  • Core/Insulation Crimp: K/K
  • Release Tool/Test Probe: 15315247/J-35616-64B (L-BU)

Recirculation Actuator

Pin

Wire Color

Circuit No.

Function

1

YE

61

Low Reference

2

GY

705

5-Volt Reference

3

PU

1838

Recirculation Door Position Signal

4

TN/BK

2274

Recirculation Door Control A

5

D-GN

1614

Recirculation Door Control

Sunload/Ambient Light Sensor


Object Number: 130637  Size: CH

Connector Part Information

  • OEM: 12064760
  • Service: 12085208
  • Description: 4-Way F (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

Sunload/Ambient Light Sensor

Pin

Wire Color

Circuit No.

Function

A

L-BU/BK

590

Driver Sunload Sensor Signal

B

GY

1548

Passenger Sunload Sensor Signal

C

YE

61

Low Reference

D

L-GN/BK

1137

Ambient Light Sensor Signal