Question about 2002 GMC Envoy

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My 2002 gmc envoy starts with remote but will not crank with keys

Aftermarket remote start was installed 2 years ago and truck work fine until 2 months ago.new gin switch was installed but no result.

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The remote start bypasses the ignition portion of the antitheft security system to allow you to remotely start the truck. But the system still needs the signal from the key to allow the vehicle to remain running and drive. I would assume the ignition is bad or needs to be trained to the system if it was replaced.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Mar 31, 2014

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Do you have a keyless remote on your ignition key? Or have you just replaced a key? If you haven't replaced a key, does your remote still work on your key? If not the battery in it is dead. If it's like mine, it's a CR2032 battery; they're about the size of a quarter. It says "unknown driver" because it has a factory alarm and your key is the on/off switch (either the little chip or in the remote).

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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.

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I have a 2003 GMC Envoy with 79k miles. I have


sounds like 1 of 2 problems. without the vehicle it is hard to say but first I would check the ignition switch and then look at the body control module. hope this helps,
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1 Answer

2002 GMC Envoy, i put the key in ignition and vehicle will not start sometimes and other times is starts fine. we have checked the starter, battery and battery connections, all fine. Changed the starter...


Ignition switch and neutral safety switch. Next time it happens wiggle thekeys in the ignition switch and try to restart.If it starts its probably the ignition switch. Then locate neutral safety switch on brake pedal and put meter on B+ wire from switch to starter relay and see if you get B+ on the would -be- crank. Next locate B+ wire from starter relay to starter hook a meter to it and see if you get B+ on the would -be crank.
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Loss of engine power and difficult to start


two things come to mind

1 fuel injectors are gummed up. get some berrymans chemtool and put it in the tank do it twice.

2 I had a ford ranger that had the same symptoms after warping two heads the mechanic discovered that the catayitic converter was blocked

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2002 GMC Envoy


If your 2002 gmc envoy or sierra will not even turn over with a kown good battery try starting it in nuetral then go back to park and try starting again. There is a park nuetral safety switch that can malfunction. Turn the key on then shift into nuetral, then turn fully to start.
 

May 19, 2008 | 2002 GMC Envoy

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