Where is the engine control computer located?

Where is the engine control computer located?

In most vehicles, the ECM is located in the engine compartment. Some vehicles have the ECM mounted under the driver’s or passenger seat, however.

Can a ECU be repaired?

ECU repairs can be very expensive. The part alone can cost between $1,000 and $3,000, depending on the make and model of your vehicle. Fortunately, an ECU can be repaired or reprogrammed in many cases—thus preventing the need to actually replace an ECU.

How do I know if I have a bad PCM?

Continuing to run a vehicle with a bad PCM could cause further damage. Because the PCM controls the emissions of your car, a failed emissions test or the presence of oddly-colored or foul smelling exhaust may be a sign that your PCM is going bad. A malfunctioning PCM will activate dashboard error lights.

What happens if PCM goes bad?

A failing PCM disrupts the functions of many components along with the engine. As the module becomes unable to read the sensors correctly, the car won’t be able to give its best performance. The state of affairs will cause the check engine and a few other error lights to come on.

What does resetting the PCM do?

When the PCM (Powertrain Control Module) is not working properly, the vehicle will have problems such as warning lights displaying on the dashboard or even stalling and sputtering. Resetting the PCM on your vehicle will help to clear all codes from it after a problem is fixed.

What is a PCM unlock?

GM PCM Unlocking Service A locked PCM means that you can not read, write, or erase the PCM (not even the dealer can put it back to stock). The problem is often the tuner shops that do this go out of business, or worse you purchased the vehicle used and do not know who locked it.

How long does it take to unlock a PCM?

You will replace your vehicle’s stock PCM with the aftermarket Diablo PCM through a simple process that should only take about twenty minutes. Once you have replaced the factory PCM, you can install a tune with your DiabloSport tuner and you’re ready to go!

Who can unlock my PCM?

Registered. Diablo, HP Tuners and probably others can unlock the PCM for tuning with their software. Make sure you understand how tuning takes place and what other hardware/software is required before you move forward. Most folks opt to purchase an unlocked PCM and retain the stock one for back up, warranty, etc.