I need to reset the check engine light on my isuzu trooper 2004 v-6

To reset the engine light you need an OBDII Reader or can have it done at an auto parts store.
$39 From Harbor Freight. They have retail stores in many areas or use the following: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=94168
It plugs into the OBDII socket. It is under the dash next to the driver side door.
Select 'Erase' on the Reader menu and you are done.
Alternatively, you can disconnect the battery. This should wipe the OBD memory. Unfortunately, it will also reset the clock, the radio presets, and anything else in RAM in the car. Still, cheaper than going out and buying an OBD reader. Let me know if you have any further questions.


Benjamin