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How hard is replacing the computer

Tiny
THECROSS22
  • MEMBER
  • 2005 CADILLAC CTS
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 161,000 MILES
A mechanic has told me I need a computer and he does not program them so I have to take it somewhere else or do it myself.

I saw on eBay people selling computers pre-programmed. They say you give them your VIN number and they send it pre-programmed for your car. I am not sure if that works. I am assuming that means I can put it in and not have to go to the dealership to have it programmed, right?

So, if that is real, I assume I could just replace it myself. Does anybody know how hard that is? Does anyone have any instructions or diagrams? Or videos?
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Tuesday, November 7th, 2017 AT 10:05 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You can do that but you will still have to do a security system relearn before it will start but the computer should come with instructions on how to do that. You can do that part yourself.
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Tuesday, November 7th, 2017 AT 2:50 PM

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