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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1544 (POWER SEAT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESMEMORY SEAT FEATURE INOPERATIVE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Memory Seat Feature Inoperative

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Memory Seat Feature Inoperative
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.
Memory Seat Feature Inoperative

Step Action Values Yes No
Schematic Reference: Memory Seats Schematics 
Connector End View Reference: Power Seat Systems Connector End Views 
DEFINITION: One or more of the memory recall functions are inoperative.
1 Did you perform the Power Seat Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - Power Seat Systems 
2 Attempt to set and recall memory 1, memory 2, and exit seat position settings.
Does the system operate normally?		 - Go to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems Go to Step 3 
3
  1. Install a scan tool.
  2. Observe the Memory Switch parameter in the driver door module Inputs data list.
  3. Press the memory 1 switch.
Does the scan tool indicate the memory 1 switch is active only while the switch is pressed?		 - Go to Step 4  Go to Step 6 
4
  1. Observe the Memory Switch parameter in the driver door module Inputs data list.
  2. Press the memory 2 switch.
Does the scan tool indicate the memory 2 switch is active only while the switch is pressed?		 - Go to Step 5  Go to Step 7 
5
  1. Observe the Memory Switch parameter in the driver door module Inputs data list.
  2. Press the exit switch.
Does the scan tool indicate the exit switch is active only while the switch is pressed?		 - Go to Step 12  Go to Step 8 
6
  1. Disconnect the memory seat switch connector from the driver door module.
  2. Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 1 switch signal circuit terminal in the pigtail connector. Refer to CIRCUIT TESTING in Wiring Systems.
  3. Press the memory 1 switch.
Is the resistance less than the specified value only while the switch is pressed?		 0.5 Ω Go to Step 13  Go to Step 11 
7
  1. Disconnect the memory seat switch connector from the driver door module.
  2. Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 2 switch signal circuit terminal in the pigtail connector. Refer to CIRCUIT TESTING in Wiring Systems.
  3. Press the memory 2 switch.
Is the resistance less than the specified value only while the switch is pressed?		 0.5 Ω Go to Step 13  Go to Step 11 
8
  1. Disconnect the memory seat switch connector from the driver door module.
  2. Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 1 switch signal circuit terminal in the pigtail connector. Refer to CIRCUIT TESTING in Wiring Systems.
  3. Press the exit switch.
Is the resistance less than the specified value only while the switch is pressed?		 0.5 Ω Go to Step 9  Go to Step 11 
9
  1. Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 2 switch signal circuit terminal in the pigtail connector. Refer to CIRCUIT TESTING in Wiring Systems.
  2. Press the exit switch.
Is the resistance less than the specified value only while the switch is pressed?		 0.5 Ω Go to Step 10  Go to Step 11 
10 Test the memory switch signal circuits in the switch harness for a short to ground or voltage. Refer to CIRCUIT TESTING in Wiring Systems.
Are either of the switch signal circuits shorted to ground or voltage?		 - Go to Step 14  Go to Step 13 
11 Inspect for poor connections at the memory switch connector. 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 driver 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 15 
13 Inspect for poor connections at the driver door 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 memory switch. Refer to Memory Seat Switch Replacement .
Did you complete the replacement?		 - Go to Step 17  -
15 Replace the driver seat module. Refer to Memory Seat Control Module Replacement .
Did you complete the replacement?		 - Go to Step 17  -
16 Replace the driver door module. Refer to SWITCH REPLACEMENT - DOOR LOCK AND SIDE WINDOW - DRIVER in Doors.
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 
RENDER: 1.0x

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