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Hosted by Fleece Performance. Follow the maker's instructions and torque specs.
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Control your torque converter from the palm of your hand with the AlliLocker(tm) from Fleece Performance Engineering. The AlliLocker(tm) is 100% code free 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. 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.
2001-2016 AlliLocker - Allison Torque Converter Controller
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It is listed for: 2001-2005 Chevrolet Silverado 2500 HD; 2015-2016 Chevrolet Silverado 2500 HD; 2001-2006 Chevrolet Silverado 2500 HD and more (see the full list above). Pick your vehicle on this page to check your exact year and trim.
No — this part has no CARB Executive Order, so it is not for sale or use in California or on vehicles registered there.
The maker's installation guide is on this page — see Installation guide under the part details for the step-by-step and the torque figures. Work on level ground with the car properly supported, and torque every fastener to the maker's figure. If the job is beyond your tools, any shop that does this kind of work can fit it.
What's in the box above lists what the maker includes when we have it, and the maker's guide names any tools or extra parts.
Many parts are bolt-on jobs with hand tools; the maker's guide on this page shows the steps and the torque figures. If it is beyond your tools, a shop can fit it.
Check the vehicle list above against your exact year and trim before ordering. If something is off, call or text us at 813-535-5801 and we will sort it out.
Yes — monthly options show right under the Add to Cart button. Affirm, Klarna, PayPal Pay Later and Snap Finance are offered at checkout, and checking what you qualify for does not affect your credit score.
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