How to replace the Back Up Light Switch on the ZF S6-650 on GMC Sierra 3500?

To replace the back up lamp switch on the ZF S6-650 the following should be done: first, raise and suitably support the vehicle. For models with 6.6L engine disconnect the back up lamp switch electrical connector & in models with 8.1L do the same i.e. disconnect the back up lamp switch electrical connector. Then, take out the back up lamp switch. Make sure to tighten it to 20 Nm (15 ft. lbs), refer to the fastener notice, when installing new switch. For 8.1L engine reconnect back up lamp switch electrical connection and for 6.6L reconnect back up lamp switch electrical connection before lowering the vehicle.

OEM GMC Sierra 3500 Back Up Light Switch

Reverse Light Switch

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7 Back Up Light Switches found

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GMC Sierra 3500 Neutral Safety Switch
Part Number: 29540479
$178.76 MSRP: $281.26
You Save: $102.50 (37%)
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Product Specifications
- Other Name: Switch Kit, Transmission Safety Starting Switch Or Speed Sensing; Switch Kit, Safety Starting Switch; Transmission Safety Start/Warning; Back Up Lamp
- Replaced by: 19540535
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2004 GMC Sierra 3500 | Base, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Neutral Safety Switch
Part Number: 24229422
$74.42 MSRP: $121.81
You Save: $47.39 (39%)
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Product Specifications
- Other Name: Switch, Parking/Neutral Position & Back Up Lamp; Range Sensor; Transmission Safety Starting Switch; Speed Sensing; Back Up Lamp
- Replaced by: 24298931
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 GMC Sierra 3500 | Base, SL, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Neutral Safety Switch
Part Number: 29541852
$99.36 MSRP: $155.63
You Save: $56.27 (37%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Switch Kit, Transmission Safety Starting Switch Or Speed Sensing; Switch Kit, Safety Starting Switch; Transmission Safety Start/Warning; Back Up Lamp
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 GMC Sierra 3500 | Base, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Neutral Safety Switch
Part Number: 24221125
$88.21 MSRP: $138.18
You Save: $49.97 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Parking/Neutral Position & Back Up Lamp; Back Up Light Switch; Range Sensor; Back-Up Switch; Transmission Safety Starting Switch; Speed Sensing; Back Up Lamp
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Back-Up Switch
Part Number: 14014559
$17.77 MSRP: $27.84
You Save: $10.07 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Back Up Lamp; Back Up Light Switch; Switch, Electrical Switches
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 GMC Sierra 3500 | Base, SL, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Back-Up Switch
Part Number: 19152824
Product Specifications
- Other Name: Switch, Back Up Lamp; Back Up Light Switch; Switch, Safety Starting Switch Or Speed Sensing
- Replaces: 88996556
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
View related parts
GMC Sierra 3500 Back-Up Switch
Part Number: 12479776
Product Specifications
- Other Name: Switch Assembly, Back Up Lamp; Back Up Light Switch; Switch, Back Up Lamp
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS

GMC Sierra 3500 Back Up Light Switch

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GMC Sierra 3500 Back Up Light Switch Parts Questions & Experts Answers

Neutral Safety Switch
24221125
Q: How to replace the Back Up Light Switch on the ZF S6-650 on GMC Sierra 3500?
A: To replace the back up lamp switch on the ZF S6-650 the following should be done: first, raise and suitably support the vehicle. For models with 6.6L engine disconnect the back up lamp switch electrical connector & in models with 8.1L do the same i.e. disconnect the back up lamp switch electrical connector. Then, take out the back up lamp switch. Make sure to tighten it to 20 Nm (15 ft. lbs), refer to the fastener notice, when installing new switch. For 8.1L engine reconnect back up lamp switch electrical connection and for 6.6L reconnect back up lamp switch electrical connection before lowering the vehicle.