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    We're closed on major holidays.

    PRI Booth 2435 (December 7th-8th)

  • Harness order lead time is estimated to be 7-9 weeks from date of purchase.

    All other items typically ship within 3-5 business days unless specified otherwise.

    Speartech will be attending PRI December 7th and December 8th @ Booth 2435

    We will be out of office during the 7th and 8th of December.

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LS and LT Retrofit Specialists
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4L60E Add-On Harness

4L60E Add-On Harness

Product Code: 4L60Eaddon
Usually Ships in 24 to 72 Hours
If switching from a T56 (manual trans) to a 4L60E on your LS vehicle, this harness is what you need to make it work properly. Plugs into the new transmission and the other end is fully terminated and labeled for easy hook-up to your ECM connectors. ECM reprogramming required for proper operation.

This is designed for use on vehicles using the 99 and newer LS1 style PCM in Camaros, Firebirds, and Trucks. It will not work with E40, E38, or E67 controllers.