Hummer H2. Manual - part 566

Seat Front Vertical Motor Terminal Identification - Front Passenger 

Seat Lumbar Motor Terminal Identification - Front Passenger 

Connector Part Information

z

12020556  

z

2-Way F Metri-Pack 480 Series (BK)  

Pin

Wire Color

Circuit No.

Function

A

BK

287

Driver Seat Front Vertical Motor Down Control

B

RD

286

Driver Seat Front Vertical Motor Up Control

Connector Part Information

z

12020556  

z

2-Way F Metri-Pack 480 Series (BK)  

Pin

Wire Color

Circuit No.

Function

A

BK

298

Passenger Seat Front Vertical Motor Down Control

B

RD

297

Passenger Seat Front Vertical Motor Up Control

Connector Part Information

z

12052109  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2

  

Seat Rear Vertical Motor Terminal Identification - Driver 

Seat Rear Vertical Motor Terminal Identification - Front Passenger 

z

2-Way F Metri-Pack 280 Series (BU)  

Pin

Wire Color

Circuit No.

Function

A

D-BU

211

Passenger Seat Lumbar Motor Forward Control

B

WH

210

Passenger Seat Lumbar Motor Rearward Control

Connector Part Information

z

12020556  

z

2-Way F Metri-Pack 480 Series (BK)  

Pin

Wire Color

Circuit No.

Function

A

BK

283

Driver Seat Front Vertical Motor Down Control

B

RD

297

Driver Seat Front Vertical Motor Up Control

Connector Part Information

z

12020556  

z

2-Way F Metri-Pack 480 Series (BK)  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2

  

Seat Recline Motor Terminal Identification - Driver 

Seat Recline Motor Terminal Identification - Front Passenger 

Pin

Wire Color

Circuit No.

Function

A

BK

289

Passenger Seat Rear Vertical Motor Down Control

B

RD

288

Passenger Seat Rear Vertical Motor Up Control

Connector Part Information

z

12129082  

z

2-Way F Metri-Pack 480 Series (M-GY)  

Pin

Wire Color

Circuit No.

Function

A

L-BU

277

Driver Seat Recline Motor Rearward Control

B

L-GN

276

Driver Seat Recline Motor Forward Control

Connector Part Information

z

12129082  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2

  

DIAGNOSTIC INFORMATION AND PROCEDURES 

DIAGNOSTIC STARTING POINT - SEATS 

Begin memory and heated seat system diagnosis with Diagnostic System Check - Power Seat Systems . 

The Diagnostic System Check will provide the following information. 

z

Identification of the control modules that command the system.  

z

The ability of the control modules to communicate with a serial data circuit.  

z

Identification of stored diagnostic trouble codes and their status.  

The use of the Diagnostic System Check will identify the correct the correct procedure for diagnosing the 
system and where the procedure is located. 

DIAGNOSTIC SYSTEM CHECK - POWER SEAT SYSTEMS 

Test Description 

The numbers below refer to the step numbers on the diagnostic table. 

2: The lack of communication may be caused by a partial or a total malfunction of the class 2 serial data 
circuit. The specified procedure will determine the particular condition.  

4: If no DTCs are present refer to the symptom list in Symptoms in order to determine the correct 
diagnostic procedure to use.  

5: The presence of DTCs which begin with "U" indicate some other module is not communicating. The 
specified procedure will collect all the available information before tests are performed.  

Diagnostic System Check - Power Seat Systems 

z

2-Way F Metri-Pack 480 Series (M-GY)  

Pin

Wire Color

Circuit No.

Function

A

D-BU

77

Passenger Seat Recline Motor Rearward

B

D-GN

76

Passenger Seat Recline Motor Forward

Step

Action

Yes

No

1

Install a scan tool. 
Does the scan tool power up?

Go to Step 2

Go to Scan Tool Does Not 

Power Up in Data Link 

Communications

1. Turn ON the ignition, with the 

engine OFF.  

2. Attempt to establish 

communication with the 
following control modules: 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2