How to replace the Neutral Safety Switch, manual shift shaft, detent lever, and position switch assembly in an Allison automatic transmission on GMC Sierra 1500 Classic?

Before changing the Manual Shift Shaft, Detent Lever, and Position Switch Assembly on an Allison Automatic Transmission, first take off the control valve assembly from the transmission. Take out the detent lever/IMS retaining bolt with a T27 TORX(r) bit and get rid of it because threads are treated with patch lock material. Make sure you do not damage the transmission case surface or twist the pin while taking out the spherical pin. Put a protective plate on the pin before you take it out. Put the manual shift shaft through the detent lever/IMS assembly and the manual shift shaft seal, then rotate the detent lever/IMS assembly so you can remove the park pawl apply assembly. When installing, put the new detent lever/IMS assembly into the transmission case, line up the park pawl apply assembly with the slot, and reinstall the manual shift shaft . Make sure the manual shift shaft is all the way in, install Reattach the control valve assembly last, then use a scan tool to do FastLearn and make sure the TCM has the correct adaptive values for the new parts.

OEM GMC Sierra 1500 Classic Neutral Safety Switch

Transmission Neutral Safety Switch

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5 Neutral Safety Switches found

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GMC Sierra 1500 Classic Back-Up Switch
Part Number: 19152823
$13.26 MSRP: $31.95
You Save: $18.69 (59%)
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Product Specifications
- Other Name: Switch, Back Up Lamp; Back Up Light Switch; Switch, Transmission Safety Starting or Speed Sensing; Safety Start/Warning Switch.
- Replaces: 88996477, 23049569
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 GMC Sierra 1500 Classic | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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GMC Sierra 1500 Classic Neutral Safety Switch
Part Number: 24221125
$81.16 MSRP: $138.18
You Save: $57.02 (42%)
Ships in 1-2 Business Days
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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:
- 2007 GMC Sierra 1500 Classic | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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GMC Sierra 1500 Classic Clutch Switch
Part Number: 15027967
$53.78 MSRP: $97.33
You Save: $43.55 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch, Cruise Control Selector; Switch, Transmission Safety Starting or Speed Sensing; Hydraulic Clutch Main Cylinder.
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 GMC Sierra 1500 Classic | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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GMC Sierra 1500 Classic Neutral Safety Switch
Part Number: 29542692
$138.03 MSRP: $225.20
You Save: $87.17 (39%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Detent, Transmission Throttle Valve; Automatic Transmission Position Switch; Switch, Transmission Mounted Gearshift (External)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 GMC Sierra 1500 Classic | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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GMC Sierra 1500 Classic Switch
Part Number: 23190137
$24.94 MSRP: $41.09
You Save: $16.15 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch, Transmission Safety Start/Warning; Switch, Transmission Safety Starting Switch Or Speed Sensing; Switch, Transmission Shift Brake Interlock
- Replaces: 26054721
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 GMC Sierra 1500 Classic | Hybrid | 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV)

GMC Sierra 1500 Classic Neutral Safety Switch

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GMC Sierra 1500 Classic Neutral Safety Switch Parts Questions & Experts Answers

Clutch Switch
15027967
Q: How to replace the Neutral Safety Switch, manual shift shaft, detent lever, and position switch assembly in an Allison automatic transmission on GMC Sierra 1500 Classic?
A: Before changing the Manual Shift Shaft, Detent Lever, and Position Switch Assembly on an Allison Automatic Transmission, first take off the control valve assembly from the transmission. Take out the detent lever/IMS retaining bolt with a T27 TORX(r) bit and get rid of it because threads are treated with patch lock material. Make sure you do not damage the transmission case surface or twist the pin while taking out the spherical pin. Put a protective plate on the pin before you take it out. Put the manual shift shaft through the detent lever/IMS assembly and the manual shift shaft seal, then rotate the detent lever/IMS assembly so you can remove the park pawl apply assembly. When installing, put the new detent lever/IMS assembly into the transmission case, line up the park pawl apply assembly with the slot, and reinstall the manual shift shaft . Make sure the manual shift shaft is all the way in, install Reattach the control valve assembly last, then use a scan tool to do FastLearn and make sure the TCM has the correct adaptive values for the new parts.