Hummer H2. Manual - part 575

 

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Hummer H2. Manual - part 575

 

 

POWER SEAT INOPERATIVE (PASSENGER)

Power Seat Inoperative (Passenger) 

POWER SEAT DOES NOT MOVE FORWARD/REARWARD (DRIVER) 

Step

Action

Yes

No

Schematic Reference:Passenger Seat Schematics 
Connector End View Reference:Power Seat Systems Connector End Views 
DEFINITION: All of the seat adjuster motors are inoperative, the lumbar and bolster motors may also be 
inoperative.

1

Did you review the Power Seats System Description 
and Operation?

Go to Step 2

Go to 

Symptoms - 

Seats

2

Verify the fault is present. 
Does the system operate normally?

Go to Testing for 

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

Go to Step 3

3

1. Disconnect the seat adjuster switch connector.  

2. Connect a test lamp from the battery voltage 

supply circuit terminal in the harness connector 
to a good ground.  

Does the test lamp illuminate?

Go to Step 4

Go to Step 5

4

Connect a test lamp from the battery voltage supply 
circuit terminal to the ground circuit terminal in the 
seat adjuster switch harness connector. 
Does the test lamp illuminate?

Go to Step 7

Go to Step 6

5

Repair the battery voltage supply circuit for an open or 
short to ground. Refer to Wiring Repairs in Wiring 
Systems. 
Is the repair complete?

Go to Step 9

-

6

Repair the ground circuit for an open or high 
resistance. Refer to Wiring Repairs in Wiring 
Systems. 
Is the repair complete?

Go to Step 9

-

7

Inspect for poor connections at the seat adjuster switch 
harness connector. Refer to Testing for Intermittent 
Conditions and Poor Connections and to Connector 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 9

Go to Step 8

8

Replace the seat adjuster switch. Refer to Seat Switch 
Replacement - Power . 
Is the repair complete?

Go to Step 9

-

9

Operate the system to verify the repair. 
Did you correct the condition?

System OK

Go to Step 3

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2

  

Power Seat Does Not Move Forward/Rearward (Driver)

Step

Action

Yes

No

Schematic Reference:Driver Seat Schematics 
Connector End View Reference:Power Seat Systems Connector End Views

1

Did you perform the Power Seat Diagnostic 
System Check?

Go to Step 2

Go to Diagnostic 

System Check - 

Power Seat 

Systems

2

Verify the fault is present. 
Does the system operate normally?

Go to Testing for 

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

Go to Step 3

3

1. Install a scan tool.  

2. Observe the Horizontal Forward and 

Rearward Switch parameters in the driver 
seat module Input/Output data list.  

Do either of the Horizontal Switch parameters 
display Active?

Go to Step 4

Go to Step 5

4

Disconnect the seat adjuster switch connector. 
Do both of the Horizontal Switch parameters 
display Inactive?

Go to Step 12

Go to Step 9

5

Operate the horizontal forward switch. 
Does the scan tool display the horizontal forward 
switch as Active?

Go to Step 6

Go to Step 7

6

Operate the horizontal rearward switch. 
Does the scan tool display the horizontal rearward 
switch as Active?

Go to Step 13

Go to Step 8

7

1. Disconnect the seat adjuster switch 

connector.  

2. Connect a fused jumper wire from the 

battery voltage supply circuit terminal to the 
horizontal forward switch signal circuit 
terminal in the harness connector.  

Does the scan tool display the horizontal forward 
switch as Active?

Go to Step 12

Go to Step 10

8

1. Disconnect the seat adjuster switch 

connector.  

2. Connect a fused jumper wire from the 

battery voltage supply circuit terminal to the 
horizontal rearward switch signal circuit 
terminal in the harness connector.  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2

  

POWER SEAT DOES NOT MOVE FORWARD/REARWARD (PASSENGER) 

Power Seat Does Not Move Forward/Rearward (Passenger) 

Does the scan tool display the horizontal rearward 
switch as Active?

Go to Step 12

Go to Step 11

9

Test the active horizontal switch signal circuit for a 
short to voltage. Refer to Circuit Testing and to 
Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 16

Go to Step 13

10

Test the horizontal forward switch signal circuit for 
an open or high resistance. Refer to Circuit 
Testing and to Wiring Repairs in Wiring 
Systems. 
Did you find and correct the condition?

Go to Step 16

Go to Step 13

11

Test the horizontal rearward switch signal circuit 
for an open or high resistance. Refer to Circuit 
Testing and to Wiring Repairs in Wiring 
Systems. 
Did you find and correct the condition?

Go to Step 16

Go to Step 13

12

Inspect for poor connections at the seat adjuster 
switch harness connector. Refer to Testing for 
Intermittent Conditions and Poor Connections 
and to Connector Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 16

Go to Step 14

13

Inspect for poor connections at the driver seat 
module harness connectors. Refer to Testing for 
Intermittent Conditions and Poor Connections 
and to Connector Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 16

Go to Step 15

14

Replace the seat adjuster switch. Refer to Seat 
Switch Replacement - Power . 
Is the repair complete?

Go to Step 16

-

15

Replace the driver seat module. Refer to Memory 
Seat Control Module Replacement . 
Is the repair complete?

Go to Step 16

-

16

Operate the system to verify the repair. 
Did you correct the condition?

System OK

Go to Step 3

Step

Action

Yes

No

Schematic Reference:Passenger Seat Schematics 
Connector End View Reference:Power Seat Systems Connector End Views

1

Did you review the Power Seat System Description 
and Operation and perform the necessary 
inspections?

Go to Step 2

Go to 

Symptoms - 

Seats

Verify the fault is present. 

Go to Testing for 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2

  

POWER SEAT DOES NOT TILT FORWARD (DRIVER) 

Power Seat Does Not Tilt Forward (Driver) 

2

Does the system operate normally?

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

Go to Step 3

3

1. Disconnect the horizontal adjuster motor 

connector.  

2. Connect a test lamp between the horizontal 

motor control circuit terminals in the harness 
connector.  

3. Operate the horizontal adjuster switch in both 

directions.  

Does the test lamp illuminate when the switch is 
operated in both directions?

Go to Step 6

Go to Step 4

4

Test the horizontal motor control circuits for an open 
or short to ground. Refer to Circuit Testing and to 
Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 9

Go to Step 5

5

Inspect for poor connections at the seat adjuster 
switch. Refer to Testing for Intermittent 
Conditions and Poor Connections and to 
Connector Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 9

Go to Step 7

6

Inspect for poor connections at the horizontal adjuster 
motor. Refer to Testing for Intermittent Conditions 
and Poor Connections and to Connector Repairs in 
Wiring Systems. 
Did you find and correct the condition?

Go to Step 9

Go to Step 8

7

Replace the seat adjuster switch. Refer to Seat 
Switch Replacement - Power . 
Is the repair complete?

Go to Step 9

-

8

Replace the horizontal adjuster motor. Refer to Seat 
Adjuster Motor Replacement - Front . 
Is the repair complete?

Go to Step 9

-

9

Operate the system to verify the repair. 
Did you correct the condition?

System OK

Go to Step 3

Step

Action

Yes

No

Schematic Reference:Driver Seat Schematics 
Connector End View Reference:Power Seat Systems Connector End Views

1

Did you perform the Power Seat Diagnostic 
System Check?

Go to Diagnostic 

System Check - 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Seats - Hummer H2

  

 

 

 

 

 

 

 

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