How do you reset the computer on a GMC?

This scan tool can be purchased from most auto parts stores and is required to reset the vehicle’s computer. Open the door on your GMC vehicle and locate the port to the left of the fuse panel. Plug the electrical connector from the OBD scan tool into the OBD port. Turn the ignition key to the “II” position.

How to reset the security light on a GMC Jimmy?

Press the power door-lock switch to lock all the doors, with the driver’s door still open. The “SECURITY” light will come on. Close the driver’s door. The “SECURITY” light will go off after about 30 seconds. The system has been reset. “2000 GMC Jimmy Owner’s Manual”; General Motors Corporation; 1999

How to reset the engine control module ( ECU )?

The 2 most common ways to reset your car computer is by either unplugging the battery or by resetting the fuse related to the engine control module Will disconnecting battery reset ECU? Disconnect the battery and Switch the ignition key to the on position for about 15 minutes should reset the ECU

What to do if your GMC Truck wont start?

No relearn is necessary. In this situation, the vehicle will start and run with no problem. If the vehicle won’t start, check your scan tool for a VTD (Vehicle Theft Deterrent) Fail-Enable Mode trouble code, or if the security light on the dash is illuminated.

What does an error code on a GMC mean?

The computer on your GMC vehicle generates and stores error codes. An error code does not always mean that something is wrong with your vehicle. Error codes are generated when regular maintenance is required.

When do I need to Reset my Car Computer?

Resetting your car computer will do no harm to your vehicle and should always be done when any replacements are installed like a fuel filter, knock sensor even you when after work on your car air conditioning or any diagnostics are performed . Do not hesitate to check your repair manuals or the owners manual if you want to replace your vehicle ECM.

Is there a way to reset the engine control module?

There are a few ways to reset your Engine control modules. One way is by disconnecting the battery cable for 2 to 3 minutes and waiting to see if the check engine light comes back on upon reconnecting the battery and start the car.

When to reset TPMS tire pressure light on GMC Sierra?

These instructions are based on the GMC Sierra owner’s manual. This procedure should apply to the second, third, and fifth generations of the GMC Sierra (2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 model years).

Why does my Silverado 2500HD no start no crank?

If it helps, usually when this happens, the first time you try to start it, it will start for like a split second and stall out. From there on it just makes a soft clicking at the relays and won’t crank. I usually do not do a lot of repairs to my truck myself.

How to repair a LB7 6.6 Duramax engine?

We carry a full line of repair and performance parts for these engines that we install in our shop on a regular basis. Odds are we have run across your problem before and would be glad to help. Call us at 1-877-367-9351.

How can I Reset my GMC Yukon shift?

I pulled back in and put it in park and tried to drive and it failed again. I disconnected the batteries and reset the system and it ran great like it used to. A week later the same thing happened again. The same problem as well followed with the rough shifting as well. Then a couple days ago it did it to me again.

How can I Reset my GM car alarm?

After deactivating it, you can reset the alarm to ensure that your GM vehicle security system is set correctly. Use your GM keyless remote to unlock the doors by pressing the “Unlock” button.