SKU: 29251854834

AlliLocker

Sale price$97.65 Regular price$108.50
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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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: 29251854834

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Jacob
Birmingham, US
★★★★★ 5
Good shirt.
Size: Large Tall, Color: Green Camo Print
New favorite shirt. Definitely a LT. cheapest big and tall button down i could find and i love it.
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Reviewed in the United States on April 10, 2026
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Dan
Boise, US
★★★★★ 4
Nice shirt but size up one to two sizes.
Size: Large, Color: Clay
I love this shirt. it is good quality. I got the clay colored one. I really like it. They do run small. I normally wear a medium. So I got a large. It fits pretty well. It is a tad bit tight, but I am losing weight(145LBS) So far. So it should fit fine in a few weeks. I am 5,2 135Lbs. I probably should have gotten the XL.
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Reviewed in the United States on May 17, 2026
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Bonnie Warren
Carnegie, US
★★★★★ 5
Pretty blue
Size: XX-Large, Color: Indigo
Fits perfect
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Reviewed in the United States on June 3, 2026
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RevU
Los Angeles, US
★★★★★ 5
Slim fit for the winner
Size: Medium, Color: Clay Floral Print
Beautiful orange shirt and I love the metal buttons. Very comfortable and I like the slim fit. It appears more tailored. I'm a tall guy at 6'4" and the length for a medium was perfect.
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Reviewed in the United States on June 4, 2026
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Don R. Griffin
Charlottesville, US
★★★★★ 5
Work shirt
Size: XX-Large, Color: Clay
Work shirt with 2 pockets, 1 for phone, 1 for phones charger.
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Reviewed in the United States on June 1, 2026

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