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2006 GMC Envoy won't start runs for 2 seconds after that will not start have too leave over night too start again lots fuel pressure to top engine 245000km new fuel pump.

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Check the EGR purge valve. If it gets stuck it may cause this sort of issue

Posted on Jan 02, 2017

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Possible causes are plugged filter or pressure regulator malfunctioning. Carefully check the pressure again - if out of range (not from 60 - 66 psi), that is probably the problem.

Posted on Jan 02, 2017

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The engine will crank but will not start why?


Do you have any codes or an engine light on, in your dash board ? Have you checked for spark at your plugs ? There are many things that could cause a vehicle to not start. Bad camshaft/crankshaft sensors. Poor ground wiring. Defective spark plugs or wires/coils.

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Do you hear the pump come on briefly with key in run, not start? You should check fuel pressure-some parts stores rent a fuel pressure tester for small fee. Or try this: spray some starting fluid into the air intake when trying to start. If it starts and runs a few seconds, you know you have a fueling problem- pump or injectors or something with the fuel.
Always check for trouble codes with a no start. If checking for spark and have no spark to the plugs, then it could be the crank position sensor. That sensor is crucial for the computer to figure spark timing. But if no spark, it could be other things as well, like the cam position sensor, ignition control module, or a problem in the circuits for all these. The crank sensor is just an educated guess for no spark-not a certainty.
Since it won't run, you can't go to have the computer scanned for free at a parts store-do you have any friends or relatives with an OBD-2 hand held scanner? Just to check for any trouble codes, but do check for fuel and spark.

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2006 gmc envoy loses power and stalls out


Take your Envoy to a competent mechanic and have it checked for OBD codes, etc. Otherwise, you are just replacing parts at random without identifying and solving the real problem(s).

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2006 hyundai sonata takes awhile to start


Could be a fuel problem. I would have someone check fuel pressure before and after cranking the engine. You may be loosing some fuel pressure back into the tank when the engine is off.

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I changed the steering colomn on my 2006 GMC Envoy and now it won't start, is there a code that I have to put in to get it to start again?


You may have interrupted the anti theft feature, causing the vehicle to lock out from starting. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Sep 29, 2011 | 2006 GMC Envoy

2 Answers

Gmc jimmy 2000 will crank but will not start what could be the promblem


does the word security stays flashing after you crank the engine? if it does vehicle has a problem with the passlock 2 system which is a factory installed anti-theft system. when faulty which is too common on those year GM models, vehicle will start and run for 2 or 3 seconds and die out. follow this procedure: 1) locate yellow 20ga. wire running out of steering column which will run along with heavier gauge wires. correct wire will be thin compared to the main ignition wires. 2) cut wire and connect an in line toggle switch and leave in on position. 3) put key in ignition and move forward and leave it that way for approximate 15 min. or until security light goes out. 4) as soon as light goes out vehicle should start. if it does not crank engine again until it starts. 5). when engine starts flip toggle switch to the off position then security light will come on. done. passlock system is bypassed. security light will stay on constant but vehicle will no longer leave you stranded.

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1 Answer

I just changed the batter in a 2002 envoy and now it wont stay running if i let off the gas please help


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.

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1 Answer

How to cahnge a fuel filter in a 2002 envoy


  1. Remove the fuel pump relay from the junction box
  2. Crank the engine.
  3. Allow the engine to start and stall.
  4. Crank the engine for an additional 3 seconds to ensure the relief of any remaining fuel pressure.
  5. Disconnect the negative battery cable in order to avoid re-pressurizing the fuel system.
  6. Install the fuel pump relay to the junction box .
  7. Tighten the fuel filler cap.

Jun 17, 2009 | 2002 GMC Envoy

1 Answer

2006 GMC Envoy where is the mass air sensor


yes, good suspect.. but code check it for soft codes you may not be seeing a check engine light..also related are O2 sensor/computer itself/TPS/ oil pressure switch/ resistance to fuel pump after warm(failing) and some others.........good luck

Dec 08, 2008 | GMC Envoy Cars & Trucks

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