Help with 4l60e wont do nothing

Robmartin

Original poster
Member
Apr 6, 2018
1
Denham springs la
4 l 6-0 e transmission took it out of a 99 put it in a 05 Trailblazer wire harnesses aren't the same the 99 has two plugs 05 has one plug how do I wire r plug it in to make it work. I took the old neutral safety switch off and all the plugs off the old transmission put them on my transmission to plug them in and transmission won't do nothing so do I need to put the old plugs back on the transmission and have a wiring harness or what
 

Mooseman

Moderator
Dec 4, 2011
25,262
Ottawa, ON
You're likely gonna have to get the wiring diagrams for both and compare which wire to which. We have Trailblazer's here (check my signature for manuals) but for the 99, you'll have to find them somewhere.
 
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