using shift light
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CF Beginner
Joined: Nov 2022
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using shift light
so i have put a th400 in my truck and want to use the PCM to tell me when to shift when at full throttle. HPTuners allows setting it upbut i need to know what pinout to connect the light to. any help? 2002 Silverado 4x2 5.3L
CF Veteran
Joined: May 2011
Posts: 1,578
Likes: 302
From: Central Iowa
Typically the tuners will have detailed instructions with them, including specific electrical connections and pin out diagrams.
If not, they can usually be found easily on the manufacturer website.
If not, they can usually be found easily on the manufacturer website.
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silverado571
Silverado, Sierra & Fullsize Pick-ups
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Jun 30, 2011 10:49 AM
