OEM 2002 GMC Savana 3500 Neutral Safety Switch

2002 GMC Savana 3500 Neutral Safety Switch Parts and Q&A

• Q: How to replace the Neutral Safety Switch on a 4L60-E transmission on 2002 GMC Savana 3500?

  A: To change the park/neutral position switch of a 4l60-e transmission first engage the toothed part with the help of the parking brake and move the transmission to neutral. Lift the vehicle and unscrew the nut where the transmission control lever is fixed to the manual shaft and then remove the transmission control lever. The electrics are then disconnected from the switch and the bolts used to hold the switch holding the park/neutral position switch to the transmission are also unbolted drawing the switch from it out of the shaft. If the switch is unable to slide off readily, file the outer edge of the manual shaft free from any burrs. For installation install, align the switch hub flats with the manual shaft flats and push the switch onto the shaft till the mounting bracket touches the transmission bosses. In case a new switch is installed, it will be accompanied by a positive assurance bracket, which will not require the neutral position adjustment tool. Fasten the switch on the transmission with two bolts finger-tight, then place the neutral position adjustment tool (J41364-A) on the switch making sure the slots are between the tabs on the tool. Turn the device until the upper locator pin lines up with the switch slot, and tighten the bolts to 25 nm (18 ft. Lbs.). Take out the tool and if necessary remove the positive assurance bracket. Reattach the electrical connectors back and install the transmission control lever using the nut and tighten it using 25nom at 18ft. For lbs. Lower the vehicle down and test the switch for correct functioning and ensure that the engine does not start unless it is in p (Park) or n (Neutral); make sure to replace the switch if it fails to function properly.