PCM swap and alarm systems

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Jun 13, 2005 | 03:21 PM

TheChronic

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From: Colorado

PCM swap and alarm systems

I'm going to swap my PCM this week, but am wondering if I will have any difficulties with my alarm. Doing this on my 2000 Silverado 5.3 and it has a VIPER 791XV with remote start. Anyone have experiance with this and their DEI alarm with the remote start? (Viper/Clifford/Python)

Reason I ask is the remote start requires a resistor in the ignition to pose as the key when the remote start is used. Makes me wonder...

Jun 13, 2005 | 03:26 PM

Stroker 1500

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From: fresno, ca

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Originally Posted by TheChronic

It won't affect the alarm but will affect the vats system. You will have to do a VATs relearn. Other than that it should be fine

Jun 13, 2005 | 03:33 PM

TheChronic

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From: Colorado

is that the passkey procedure?

Jun 14, 2005 | 02:31 PM

TheChronic

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Well just an update for anyone who would like to know my experiance, after putting the new PCM in, I had to do the passkey procedure, and then the engine fired right up with a perfect idle. The alarm is working fine and it hasn't given me any greif with the passkey again.