OEM GMC Savana 3500 Neutral Safety Switch

GMC Savana 3500 Neutral Safety Switch Parts and Q&A

• Neutral Safety Switch
  24229422
  Q: What tools are required to service and repair the Neutral Safety Switch on GMC Savana 3500?

  A:

  The tools and equipment needed to service and repair the transmission position switch/sensor include: neutral position adjustment tool (J 41364-A). Start by placing the parking brake and shifting the transmission in neutral. Pulled negative Battery Cable, removed nut from the end of the tranmission control lever to the manual shaft and removed lever. Next, you will disconnect the wiring harness connector from the park/ neutral position switch and remove the two bolts which hold the switch to the transmission after which you will be able to take off the switch on the manual shaft. For installation, place the neutral position adjustment tool (J 41364-A) on the park/neutral position switch where the two slots on the switch fall into the lower tabs of the tool. Twist the tool until the upper locator pin meets the slot on the top of the switch. When the switch does not come off the manual shaft, file the outer edge of the shaft removing any burrs. Mount the switch on the transmission manual shaft by placing into place according to the switch hub flats and the manual shaft flats, until the mounting bracket is in contact with the transmission mounting bosses. Install the switch to the transmission with the two bolts and tighten them to 28 nm (21 ft. Lbs.). Further, take off the neutral position adjustment tool (J 41364-A), connect the wiring harness connector back to the switch, and reinstall the transmission control lever to the manual shaft with the nut that should be tightened to 28 nm (21 ft. Lbs.). Finally, lower down again, connect the negative Battery Cable and ensure the switch works as it should, and only the engine can start in the p (Park), n (Neutral).
• Neutral Safety Switch
  24221125
  Q: How to replace the Neutral Safety Switch on a 4L80-E/4L85-E automatic transmission on GMC Savana 3500?

  A:

  In order to replace the park/neutral position switch on a 4l80-e/4l85-e automatic transmission, make sure to set the parking brake, as well as move the transmission into neutral. Lift the vehicle and remove the nut holding the transmission control lever to the manual shaft, and then it is removed. Unplug the electrical connectors from the switch, and take out the bolts that hold the park/neutral position switch to the transmission, and then remove the switch from the manual shaft. Should the switch not come off easily, shave the outer edge of the manual shaft to get rid of any burrs. Install the switch by putting the switch hub flats in line with the manual shaft flats, and slip the switch on the shaft to make the mounting bracket touch the transmission bosses. When a new switch is being installed there will be a positive assurance bracket so neutral position adjustment tool is not required. Tighten the switch to the transmission using two bolts finger tight and align the neutral position adjustment tool (J 41364-A) on the switch, make sure the slots are locating with the tool tabs. Adjust the tool by spinning it to ensure lines up into the slot of the switch bolt and secure it to 25 nm (18 ft. Lbs). Therefore, eliminate the adjustment tool, and where necessary, the positive assurance bracket. Reconnect the electrical connectors to the switch, insert the transmission control lever onto the manual shaft using the nut and tighten it to 25 nm (18 ft. Lbs.). Lastly, lower the vehicle and test the switch for its proper operation by making sure that the engine clicks only when the vehicle is in p (Park) or n (Neutral) positions. Replace it if it does not work accordingly.