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Ernest

Ernest 3/24/2021

2003 Pontiac Grand Prix GT 6 Cyl 3.80L

Engine

how do u reset anti theft system

hi my is Ernie I have a 2003 pontiac grand prix gt an i recently changed my battery in the car because it was bad an since the battery was removed it reset my whole car ecm module an now my anti theft light is on
how wld i be able to get it off an wld i have to get a new key reprogramed now

1 Answer


Jimm

Jimm 12/10/2022

STEP 1
Exit the vehicle and stand next to the driver's side front door. Close all of the vehicle's doors.

STEP 2
Press and hold the lock and unlock buttons on the keyless entry remote until the horn honks once and the lights flash briefly.

STEP 3
Enter the vehicle and insert the ignition key into the ignition. Turn the ignition to the "ON" position but do not start the engine.

STEP 4
Wait 30 seconds and start the engine. Verify that none of the security lights on the dashboard are flashing or illuminated. The theft system has been reset.

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