How to pull the diagnostic codes on 1999 Cadillac without OBDII reader

How to pull the diagnostic codes on 1999 Cadillac without OBDII reader

How to pull codes on a 1999 Cadillac DeVille: 1. turn the key in the ignition to on (without turning the engine on) 2. press and hold down together the “off”…

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Powerstroke says:

cat got your tongue?

phatbull717 says:

That’s not a deville dashboard!

constantinescule says:

You’re right. It’s actually my Lunar Module.

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