Question about Chevrolet 1500
Hi, a reman PCM will have everything inside. If it is preflashed, it's ready to go. If you have passlock on the truck, follow this relearn procedure:
Here is the official GM passlock relearn procedure:
1. Turn ON the ignition, with the engine OFF. Attempt to start the engine, then release the key to ON (vehicle will not start).
2. Observe the SECURITY light, after approximately 10 minutes the light will turn OFF.
3. Turn OFF the ignition and wait 5 seconds.
Turn key to START, sometime your car will start after only one relearn. If so, you're done. If not, repeat steps 1 to 3 two more times (for a total of 3 relearns). At that point, the vehicle will be ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to START.
Important: The vehicle learns the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
It will also learn your sensor feedback parameters over time. It may run a tad rough until it does this. If your PCM was NOT pre-flashed, it will have to be flased by the dealer with the appropriate logic for your engine. Please let me know if you have questions, and thanks for using FixYa.
Posted on Mar 28, 2011
This job isn't nothing of other world, just disconnected the battery before to begining. Keep in mind that the ECM is a complex computer and because of several important roles it plays in the operation of your vehicle it must be functioning correctly at all times. If you continue to drive your vehicle with a bad or faulty computer then you risk damaging other electrical parts, which will lead to unnecessary repair costs.
Most of the checking, servicing and flash reprogram procedures must be performed while the ecm is connected to your durango. Ecm reflash and correct replacement are not simple tasks. We recommend you hire a qualified mechanic to make the necessary repairs and re-flashed.
When your "new" EMC is installed, scanned to re-programming some devices and synch other modules. Some autoshop with reader code could make this.
Keep us updated.
Posted on Mar 28, 2011
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Posted on Jan 02, 2017
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