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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 49 (Power Seats) >> Diagnostic Information and Procedures >> Power Seat Does Not Tilt Forward (Driver)

Power Seat Does Not Tilt Forward (Driver)

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
Power Seat Does Not Tilt Forward (Driver)

Step Action Yes No
Schematic Reference: Driver Seat Schematics 
Connector End View Reference: Power Seat Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2 Verify the fault is present.
Does the system operate normally?
Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3
  1. Install a scan tool.
  2. Observe the Front Vertical Up and Down Switch parameters in the Driver Seat Module Input/Output Data List.
Do either of the Front Vertical Switch parameters display Active?
Go to Step 4  Go to Step 5 
4 Disconnect the seat adjuster switch connector.
Do both of the Front Vertical Switch parameters display Inactive?
Go to Step 14  Go to Step 10 
5 Operate the front vertical up switch.
Does the scan tool display the front vertical up switch as Active?
Go to Step 6  Go to Step 7 
6 Operate the front vertical down switch.
Does the scan tool display the front vertical down switch as Active?
Go to Step 9  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 front vertical up switch signal circuit terminal in the harness connector.
Does the scan tool display the front vertical up switch as Active?
Go to Step 14  Go to Step 11 
8
  1. Disconnect the seat adjuster switch connector.
  2. Connect a fused jumper wire from the battery voltage supply circuit terminal to the front vertical down switch signal circuit terminal in the harness connector.
Does the scan tool display the front vertical down switch as Active?
Go to Step 14  Go to Step 12 
9
  1. Disconnect the inoperative adjuster motor connector.
  2. Connect a test lamp across the control circuit terminals in the harness connector.
  3. Press and release the adjuster switch in both directions.
Does the test lamp illuminate when the switch is pressed in both directions?
Go to Step 16  Go to Step 13 
10 Test the active front vertical switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs .
Did you find and correct the condition?
Go to Step 20  Go to Step 15 
11 Test the front vertical up switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs .
Did you find and correct the condition?
Go to Step 20  Go to Step 15 
12 Test the front vertical down switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs .
Did you find and correct the condition?
Go to Step 20  Go to Step 15 
13 Test the motor control circuits for an open or a high resistance. Refer to Circuit Testing and to Wiring Repairs .
Did you find and correct the condition?
Go to Step 20  Go to Step 15 
14 Inspect for poor connections at the seat adjuster switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .
Did you find and correct the condition?
Go to Step 20  Go to Step 17 
15 Inspect for poor connections at the driver seat module harness connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .
Did you find and correct the condition?
Go to Step 20  Go to Step 18 
16 Inspect for poor connections at the adjuster motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .
Did you fin and correct the condition?
Go to Step 20  Go to Step 19 
17 Replace the seat adjuster switch. Refer to Seat Switch Replacement - Power .
Is the repair complete?
Go to Step 20  -
18 Replace the driver seat module. Refer to Control Module References for replacement, setup and programming.
Is the repair complete?
Go to Step 20  -
19 Replace the inoperative adjuster motor. Refer to Front Seat Adjuster Motor Replacement .
Is the repair complete?
Go to Step 20  -
20 Operate the system to verify the repair.
Did you correct the condition?
System OK Go to Step 3