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PCM interchangeability

2K views 2 replies 3 participants last post by  thathubcapguy 
#1 ·
Does anyone know what this pcm is for? I can't find a definitive answer. Chrysler p/n p56041 534AE I put it in my grand Cherokee and it'll take first gear but once it's out of first, it won't take first again. Also lose fourth gear.
 
#3 ·
just went through this with my 96. my jeep is an early production 1996 and some parts are weird. I had an obscure part numbered one (factory) which apparently was updated. So if you have a laredo you need one from a 1996-1997 laredo to interchange there are multiple part numbers. (if you need them i can look them up tomorrow at the yard i work for) (and no i don't have the ecm in stock lol i had to buy it elsewhere)
you also need to know if you have cal or fed emissions and with or without security
 
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