Question about 2002 GMC Envoy
U need to reset security system (pass lock II). Turn key to on right b4 cranking but don't start and let security light flash for about 10-12 mins until it stops and then turn key back off, repeat procedure two more times don't actually turn key far enough to start during first two 10-12 min cycles, third cycle though after flashing stops turn the rest of the way forward for it to start. This should then reset security and solve problem sometimes only takes two cycles to reset. Good luck, hope this is helpful & solves problem.
Posted on Nov 23, 2013
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Posted on Jan 02, 2017
You have a quick fix item. There is a send code button on your garage door opener. You simply have to press that button, and within 5 secs, press and hold the button on the garage door opener (your car or other) until the opener rapidly blinks. The garage door and the opener will share info,,, and presto,, you can open by the remote opener. Take a peek at your garage door opener instructions. You can have up to three settings at one time... one for each button. I was asked if the buttons ever got the openers mixed up,, and the answer is absolutely not.
Posted on Dec 01, 2008
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