2002 GMC Envoy, key stuck in ignition, car won't start. Can't close sunrooF!

How exactly is it 'jammed'? Is it wide open? Locked closed? stuck half way? Please use the Comment button below if you would like more help.
Go back to the basics. Check the fuse for the motor and you that you can here the motor trying move it. With the ignition OFF and safely using step ladders access the sunroof from above. Using a stiff toothbrush, cotton buds, (cue tips), and a clean rag, clean out the channels the sunroof sits in.
if you are in any doubt go to a good mechanic or a good auto-electrician and get them to look at the problem.

motor failing

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/

Envoy ignition switches are known for having intermittent problems and causing strange indications in the truck. Have the ignition switch changed and I'm pretty sure your problems will be solved.

Hello did you checked the security system for your car Because the new cars have anti-thief system check it with your car company. i am sure it might help. Please rate my comment thanks

make sure battery is 12.6 volts. if not you not going to be able to get transmission go all the way in park to remove ignition key.when you press brake pedal it energize brake transmission shift interlock to get transmission all way in park to remove ignition key.if all is good battery is 12.6 volts.sound like ignition switch lock cylinder broken more likely.

Put the transmission all the way into park. (P)

Hello and welcome to FixYa!
As a first course of action, I strongly suggest that you spray WD40 on the ignition switch. This will help loosen the gearing, by then you can remove the key.
Hope this helps and thank you for using FixYa! Have a good one!

try this first (cheapest remedy first) open the sunroof fully take key out of ignition shut all doors then put the key in drivers door and hold key over 30 secs to unlock car(windows will go down)then wait 30 secs.then put key back in drivers door and hold key over 30 secs to lock car,windows will go up and the sunroof will close.if the sunroof does not shut properly then we start with motor park switch.....

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.