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/PT 70-77-0002.pdf
MSA2197 PT 70 77 0002 GM Instrument Panel Cluster IPC Relearn GM vehicles with a digital instrument panel cluster IPC Vehicle will not start after replacement IPC has been installed Follow the security system PASSLOCK AUTO LEARN procedure outlined below to enable the replacement IPC and the ECC to communicate and learn a new password 1 Before replacing the ECC document all existing Diagnostic Trouble Codes DTC prior to repair 2 Place the ignition key in the ON position 3 Using a suitable scan tool clear all security system PASSLOCK and Powertrain DTCs 4 Rotate the ignition key to the CRANK position attempt to start the vehicle The engine will attempt to start and stall Leave the key in the ON position 5 Wait 10 minutes Observe the SECURITY light The SECURITY light will flash for a few seconds and remain on for 10 minutes 6 Turn the ignition key to the OFF position after the SECURITY light goes out Wait for at least 30 seconds 7 Repeat steps 4 7 two 2 more times A new password is now ready to be communicated to the security system PASSLOCK sensor IPC and ECC with the next ignition cycle start attempt 8 If the engine starts the Password Auto Learn procedure is complete If the engine fails to start perform relearn procedure again 9 Check for any DTCs Repair as necessary and clear if present Refer to your vehicle s service manual for detailed relearn procedures specific to your application Visit www cardone com for more details on Flash Problem Solution Important Note Application
