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Old 07-13-2021, 02:55 PM   #1
Dmax21
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Join Date: Feb 2016
Location: Tn
Posts: 45
need some help 4l80e experts

just did a ls swap on 84 and bought a 4l80e from the junkyard with unkown of the condition but the fluid looked good, now that i have it installed you can feel it go into reverse but will not move and it will go into D and not move but i can put it into 123 and it will pull fine, has anyone had a problem like this? it did have p1810 code which is the manifold pressure switch and i am replacing that but i'm positive that will not fix it. Do any of you guys have any suggestions?
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