How reset the computer in a GMC sonoma 1997?

To reset the computer in a 1997 GMC Sonoma, first disconnect the negative battery cable and leave it off for about 10-15 minutes. This will allow the vehicle's computer to reset itself. After the time has passed, reconnect the negative battery cable and start the engine. You may need to drive the vehicle for a short period to allow the computer to recalibrate.