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