passlock problems
Thread Starter
Junior Member
Joined: Sep 2014
Posts: 1
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passlock problems
Need help finding the theft deterrent module on a 99 Yukon . Have replaced cylinder and housing and tried the reset steps but light still on constant and won't start any help thanks
Senior Member
True Car Nut
Joined: Dec 2009
Posts: 9,616
Likes: 594
From: western,ny state
i would get your pcm tuned by blackbear or similar and have the disable taken out, the stock stuff is very problematic. as for the tdm its behind the heater control area i believe.
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