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LML Duramax Tune- Add On

Regular price $50.00

Shipping calculated at checkout.


Yes- I have purchased ECM tuning for this vehicle already
No- I do not qualify for this update request. (order will be cancelled)








Flashscan V2
Autocal




I currently have 1 tune
I currently have 2 tunes
I currently have 3 tunes
I currently have 4 tunes
I currently have 5 tunes


















This update service allows customers who have ALREADY PURCHASED ECM Tuning from our company for their LML Duramax to purchase additional tunes.
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THESE ARE CAL FLASH TUNES THAT REQUIRE FLASHING THE ECM EACH TIME. THEY ARE NOT SWITCH ON THE FLY TUNES.
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*THE MAXIMUM TOTAL IS 6 TUNES*