How to reset a computer on a 2000 GMC Jimmy?

Answer 1

Duh... just hit ctrl+alt+delete.

Just kidding...

From what I understand, all vehicles equipped with OBDII computers have to be reset using a scan tool. You can get one here:

http://www.autotap.com/product_family.asp?FamilyId=260

They're about $200.00, but it is a good investment if you plan on doing your own auto work.

Hope this helps!

Answer 2

Here's what this reference http://www.samarins.com/diagnose/checkengine.html
says about resetting the check engine light. So if none of the disadvantages below bother you and you don't have a code reader or scanner to reset it, I'd just disconnect and reconnect the battery and see what happens (as I've done many times).


Q: Will disconnecting the battery reset the "Check Engine" light?
A: Disconnecting the battery might reset the check engine light on some cars. However, instead of doing so, I'd recommend to bring your car to a dealer or a mechanic for proper diagnostic, and here is why:
- not all cars will clear the code after disconnecting the battery
- often, the problem may be actually covered by the warranty and repaired free of charge by your dealer. For example, if you have the code P0420 - Catalyst System Efficiency Below Threshold it's very possible that your catalytic converter is still covered by the original emission warranty and might be replaced free of charge (would cost you close to $1000 otherwise).
- some problems, if not repaired in time may cause a serious damage and more costly repair.
- disconnecting the battery will cause basic settings of the vehicle's computer to be erased (e.g. idle settings, fuel trim settings, transmission shift points, etc.)
- the Readiness code will be erased, which may prevent your car from completing an emissions test. (Readiness code is an indication that certain emission control components of your car have been self-tested)
- the radio, if code-protected, may be locked after disconnecting the battery
- the "check engine" light will come back anyway if the problem still exist.

Answer 3

You "might" be able to leave battery terminals off for 30 minutes or more... but some will still keep codees in them and put the CHeck Engine light back on if that is what you are trying to get rid of.

Answer 4

TAKE IT TO AUTO ZONE AND ASK THEM THAT YOU HAVE A CODE IN YOU COMPUTER THEM ASK THEN TO CLEAR IT IT IS FREE. OR TURN YOU IGNITIONS ON DON'T START ENGINE AND PUSH YOU BREAKS THEE TIMES .TURN OFF AND RESTART ENGINE.