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GMC 24221125 Neutral Safety Switch

2003-2009 GMC

Customer Questions & Expert Answers (2)
24221125 GM Neutral Safety Switch Product Photo 1 of 4
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24221125 GM Neutral Safety Switch Illustration 1 of 1
  • Part Description
    Switch, Parking/Neutral Position & Backup Lamp
  • Manufacturer
    General Motors
Make sure this part fits
$91.11 MSRP: $155.80
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  • Specifications
  • Fitment
  • Q&A

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  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number24221125
    Part DescriptionNeutral Safety Switch; Switch, Parking/Neutral Position & Backup Lamp
    Item Dimensions10.6 x 6.1 x 3.0 inches
    Item Weight1.00 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU24221125
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2004-2008 GMC Canyon4 Cyl 2.8L, 4 Cyl 2.9L, 5 Cyl 3.5L, 5 Cyl 3.7LPICKUP, PICKUP CREW CAB, PICKUP EXTENDED CAB, PICKUP EXTENDED LENGTH
    2004-2009 GMC Envoy6 Cyl 4.2L, 8 Cyl 5.3L4 DOOR, 4 Door XL, 4 DOOR XUV
    2004-2005 GMC Safari6 Cyl 4.3LVAN SAFARI
    2003-2009 GMC Savana6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA
    2004-2008 GMC Sierra6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, CREW CAB 1/2 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON
    2003-2004 GMC Sonoma4 Cyl 2.2L, 6 Cyl 4.3L4 DOOR, PICKUP, PICKUP EXTENDED CAB
    2004-2008 GMC Yukon8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 8.1L1/2 TON, 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE

  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you.
    A:
    You can Select Your Vehicle to check if 24221125 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    How to Replace or Adjust the Back Up Light Switch and Neutral Safety Switch on Chevrolet Trailblazer? Posted by Ofori A.
    A:
    The Park/Neutral Position switch, part of the transmission range switch mounted on the side of the transmission, serves as an information sensor for the Powertrain Control Module (PCM), preventing engine start in any gear other than park or neutral and activating the back-up lights when the shift lever is in reverse. To ensure proper function, verify that the engine starts only in Park or Neutral; if it starts in other gears, readjust the switch by loosening the mounting bolts and turning it slightly until the desired operation is achieved, then tighten the bolts. For replacement, disconnect the negative battery cable, apply the parking brake, and place the shift lever in Neutral. Locate the PNP switch on the transmission, disconnect the shift cable and electrical connectors, and remove the manual lever retaining nut before carefully detaching the manual lever without moving it from the Neutral position. Remove the switch retaining bolts to detach the switch from the transmission. When installing a new switch, align the slots with the notch on the switch body, or for an old switch, align the flats of the manual shaft with those of the PNP switch. Secure the switch with mounting bolts and torque them, reinstall the manual lever and tighten the nut, then reattach the shift cable and electrical connectors, completing the installation in reverse order of removal.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Jun 01, 2025

Genuine GM Part 24221125, the Right Choice

To ensure reliability, purchase GM part # 24221125 Neutral Safety Switch. It is sometimes referred to as GMC Automatic Transmission Shift Position Sensor Switch, GMC Back Up Light Switch, GMC Neutral Safety Switch. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific GMC Sierra, Sonoma, Yukon models.

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