Memory Seat Feature Inoperative (Chevy and GMC)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Memory Seats Schematics DEFINITION: One or more of the memory set or recall functions are inoperative.
1	Did you review the Memory Seats Description and Operation?	Go to Step 2	Go to Symptoms - Seats
2	Attempt to set and recall memory 1 and memory 2 seat position settings. Does the system operate normally?	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS	Go to Step 3
3	Disconnect the memory seat module connector C3. Turn the ignition ON with the engine OFF. Place the vehicle in PARK. Connect a test lamp from the shift lock control switch supply circuit terminal in the memory seat module harness connector to ground. Does the test lamp illuminate?	Go to Step 4	Go to Step 11
4	Connect a test lamp from the memory 1 switch signal circuit terminal in the memory seat module harness connector to ground. Press the memory 1 switch. Does the test lamp illuminate only when the switch is pressed?	Go to Step 5	Go to Step 7
5	Connect a test lamp from the memory 2 switch signal circuit terminal in the memory seat module harness connector to ground. Press the memory 2 switch. Does the test lamp illuminate only when the switch is pressed?	Go to Step 6	Go to Step 9
6	Connect a test lamp from the memory set switch signal circuit terminal in the memory seat module harness connector to ground. Press the memory SET switch. Does the test lamp illuminate only when the switch is pressed?	Go to Step 14	Go to Step 10
7	Disconnect the memory recall switch assembly connector. Connect a test lamp from the battery positive voltage supply circuit terminal in the memory recall switch assembly harness connector to ground. Does the test lamp illuminate?	Go to Step 8	Go to Step 12
8	Test the memory 1 switch signal circuit for the following conditions: Open Short to ground Short to voltage Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 17	Go to Step 13
9	Test the memory 2 switch signal circuit for the following conditions: Open Short to ground Short to voltage Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 17	Go to Step 13
10	Test the memory set switch signal circuit for the following conditions: Open Short to ground Short to voltage Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 17	Go to Step 13
11	Test the shift lock control switch supply circuit to the memory seat module for an open or high resistance. Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 17	Go to TEST B: SHIFT LEVER CAN BE MOVED WITHOUT BRAKE PEDAL DEPRESSED
12	Repair the battery voltage supply circuit to the memory recall switch assembly for an open or short to ground. Refer to WIRING REPAIRS . Did you complete the repair?	Go to Step 17	-
13	Inspect for poor connections at the harness connector of the memory recall switch assembly. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 17	Go to Step 15
14	Inspect for poor connections at the harness connector of the memory seat module. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 17	Go to Step 16
15	Replace the memory recall switch assembly. Did you complete the replacement?	Go to Step 17	-
16	Replace the Memory Seat Module. Refer to Memory Seat Control Module Replacement . Did you complete the replacement?	Go to Step 17	-
17	Operate the Memory Seat System to verify the repair. Did you correct the condition?	System OK	Go to Step 2