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If you mean that the engine won't turn over to allow the car to start then you probably have a dead battery or bad starting motor or relay. Get battery checked to start. If battery is good check that battery voltage goes to starter through relay, relays go bad sometimes. Finally if voltage at starter then it is most likely the starter that is bad.
hi this sounds more like you have a flat battery, try getting a jump start from someone and see if that does the trick, if it is the battery you will have to find out why it went flat...hope this helps
try car to car boost-battery charger may not be working correctly or set on low amp charge -interior lights and dash may all light but battery may not be strong enough to energize starter have battery tested if battery good than check for power to the starter if power-- starter may be shot can remove also and have tested at most auto stores free if no power battery -wiring-or connection issue would need to test fuse panel-ignition switch and starter solenoid
Try resetting the ECM, turn the ignition key to the on position "engine not running" and pull the fuse to the ECM and place it back in. Leave the keys in that position for 30 seconds and then turn it off and on again for 5 seconds and start. this will reset the ECM to default. It may stall again but let it, just start it again and let idle for 3min and go foe a test drive. This should reset the way the engine and transmission performance, and should reset the idle issue on your Envoy. Good luck and keep me posted.
This could be a bad key. Expensive but if necassary to replace to check on the symptom of the car since no codes are being thrown. I would also say check your Idle Air Control valve and your EGR valve to make sure they are working proplery
sounds like you need to either replace or clean the battery terminals. they are making just enough connection to work the lights but the load of turning on the key makes it lose what connection it has
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.
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