AlliLocker
SKU: 55214836530

AlliLocker

Sale price$97.65 Regular price$108.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

AlliLockerFits 2001 2015 Allison Equipped GM Trucks Control your torque converter from the palm of your hand with the AlliLocker from Fleece Performance Engineering. The AlliLocker is 100% code free* when used on the track and allows you to bypass the TCM to lock unlock the torque converter on demand. Turn the bypass switch off, and the TCM regains control of the torque converter clutch. *The AlliLocker is NOT desinged to be used on public roadways. If used on

Fits 2001-2015 Allison Equipped GM Trucks

Control your torque converter from the palm of your hand with the AlliLocker™ from Fleece Performance Engineering.

The AlliLocker™ is 100% code free* when used on the track and allows you to bypass the TCM to lock/unlock the torque converter on demand. Turn the bypass switch off, and the TCM regains control of the torque converter clutch.

*The AlliLocker is NOT desinged to be used on public roadways. If used on public roadways, the AlliLocker may set a DTC causing a range shift inhibit. This can typically be cleared by a key cycle. When used on the sled pull or drag race track, where there is only one lock event, the AlliLocker will not cause a range shift inhibit.

Operation

 

State

Function

 

Bypass Switch

   LED OFF (disengaged)

   TCC Operation Controlled by the TCM

   LED ON (engaged)

   TCC Operation Controlled by the Lock Switch

 

Lock Switch

   Latched (Down)

   When Bypass LED is illuminated, TCC is commanded to lock

   Unlatched (Up)

   When Bypass LED is illuminated, TCC is commanded to NOT lock

 

Operation explained in plain English:

The Allilocker™ operation is simple. Leave it in normal mode until you want control of the torque converter clutch (TCC). When you engage bypass mode (left rocker switch) the TCC is completely controlled by the pushbutton on the right (it is a latching pushbutton). If you press it down it locks the TCC and stays locked until you push it again which raises the switch back to the open/unlocked position. 

WARNING: This product is intended for closed course race use only. Do NOT use on public roadways.

WARNING: Always disengage the bypass switch and unlatch the lock switch when not in use.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55214836530

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4.4 ★★★★★
Based on 1142 reviews
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Susan Marie
Cuba, US
★★★★★ 5
Great product!
Color: Yellow, Size: 5.5" Lift, Color: Yellow, Size: 5.5" Lift
This is the best product to own if you need to change a tire on a tandem boat trailer. We have never changed a tire on our trailer before so we did some research and discovered this product. It was the best investment made. Changing the tire was fast and easy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
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Verified Purchase
Concerned buyer
Waukegan, US
★★★★★ 4
Seems to be well made
Color: Yellow, Size: 5.5" Lift
Husband says it seems to be well made. He hasn’t had to use it yet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
C
Verified Purchase
Cheryl In Texas
Chelsea, US
★★★★★ 5
An RV Must Have
Color: Yellow, Size: 5.5" Lift
We purchased this to get ready for our latest camping trip across the southwest states. Fortunately, we did not need to use it for our travel trailer during our recent trip. However we did use it to assist another couple who had a tire on their trailer that was totally shredded. He did not have any kind of Jack to be able to change his tire. This worked amazingly well, so much so that he asked for the link so he could order one from Amazon too.
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Reviewed in the United States on June 2, 2026
D
Verified Purchase
David R.
Pawtucket, US
★★★★★ 5
Effective Tool
Color: Yellow, Size: 5.5" Lift
Go try to use your standard car jack to lift your two axle travel trailer and see why this simple ramp just works. I have used this ramp for changing trailer tires, packing bearings, and changing brakes. It's effective in lifting one tire even though the suspension is articulating. It is also much more stable than a hydraulic jack under an axle. I highly recommend this ramp for travel trailer use.
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Reviewed in the United States on January 31, 2026
S
Verified Purchase
Shaun & Ashley Hutsell
Louisville, US
★★★★★ 5
Don’t leave home without it!
Color: Yellow, Size: 5.5" Lift
Excellent product. Light weight. Very durable material. Sleek design for easy storage. Perfect spacing for tandem axle trailer tire changes. Excellent value for the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

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