to get rid of the maintenance light- put the key in the ignition and turn it to the on(all the warning lights turn on but dont start the engine) position, click the button by the odometer until the mileage of your truck comes on. hold down the push button and turn the key to the off position, still holding the button, wait about 10 secs, keep holding the button, turn the key to the on position(all the warning lights turn on but dont start the engine) you will see 4 or 5 dashes on the odometer, wait till they dissappear. thats it, release the button.