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C0550 - ECU/CCU Malfunction Questions

Kaiser Pontiac

New member
So, I'm guessing I'll need to have my EBCM rebuilt, since I don't have any other ABS codes besides this one and the TC light is on. Now, what I was wondering is what is "JL4" and do all 7th gens have it - if they don't, how can I tell if mine has it? Also, what/where's the best place to send this thing off to get it fixed?
 


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