Power Seat Does Not Tilt Forward

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Memory Seats Schematics Connector End View Reference: Power Seat Systems Connector End Views IMPORTANT: This table assumes that all mechanical linkage and drivers are free from obstruction and not binding. This table also assumes that all other directions are operational.
1	Did you perform the Power Seat Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Power Seat Systems
2	Operate the front vertical adjuster switch in the upward and downward directions. Does the front vertical adjuster motor operate normally?	Go to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS in Wiring Systems	Go to Step 3
3	Install a scan tool. Observe the front vertical position switch parameter in the seat module Inputs/Outputs data list. Operate the front vertical adjuster switch in the upward direction. Does the scan tool display the correct switch status parameter in relation to the actual switch position?	Go to Step 4	Go to Step 5
4	Operate the front vertical adjuster switch in the downward direction. Does the scan tool display the correct switch status parameter in relation to the actual switch position?	Go to Step 7	Go to Step 6
5	Disconnect the seat adjuster switch connector. Connect a 3 amp fused jumper wire between the battery voltage supply circuit terminal and the front vertical upward switch signal circuit terminal in the harness connector. Observe the front vertical position switch parameter in the seat module Inputs/Outputs data list. Does the scan tool display the front vertical position switch parameter as upward?	Go to Step 12	Go to Step 8
6	Disconnect the seat adjuster switch connector. Connect a 3 amp fused jumper wire between the battery voltage supply circuit terminal and the front vertical downward switch signal circuit terminal in the harness connector. Observe the front vertical position switch parameter in the seat module Inputs/Outputs data list. Does the scan tool display the front vertical position switch parameter as downward?	Go to Step 12	Go to Step 9
7	Disconnect the front vertical adjuster motor control circuit connector. Connect a test lamp between the control circuit terminals in the harness connector. Operate the front vertical adjuster switch in both directions. Does the test lamp illuminate in the upward and downward switch positions only?	Go to Step 11	Go to Step 10
8	Test the front vertical upward switch signal circuit for an open or short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. Did you find and correct the condition?	Go to Step 17	Go to Step 13
9	Test the front vertical downward switch signal circuit for open or short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. Did you find and correct the condition?	Go to Step 17	Go to Step 13
10	Test the front vertical adjuster motor control circuits for an open or short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. Did you find and correct the condition?	Go to Step 17	Go to Step 13
11	Inspect for poor connections at the front vertical adjuster motor. Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems. Did you find and correct the condition?	Go to Step 17	Go to Step 14
12	Inspect for poor connections at the seat adjuster switch. Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems. Did you find and correct the condition?	Go to Step 17	Go to Step 15
13	Inspect for poor connections at the seat module. Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems. Did you find and correct the condition?	Go to Step 17	Go to Step 16
14	Replace the front vertical adjuster motor. Refer to Seat Adjuster Mechanism Replacement - Power . Is the repair complete?	Go to Step 17	-
15	Replace the seat adjuster switch. Refer to Seat Switch Replacement - Power . Is the repair complete?	Go to Step 17	-
16	Replace the seat module. Refer to Memory Seat Control Module Replacement . Is the repair complete?	Go to Step 17	-
17	Operate the system to verify the repair. Did you correct the condition?	System OK	Go to Step 2