Question about 2004 GMC Envoy

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Having problems with the timing on da engine. The envoy will start for a bit. It will run in neutral or park, but when put in drive or reverse. It stalls or runs really rough. We checked the fuel pump and its good. We checked the firing order of the spark plugs and theyre correct. The coils are fine as well. So we feel that it may be the timing or timing belt? im not sure, so would appreciatte any trouble shooting or tips. Thank you.

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While in idle, turn on your rear defroster or any other electrical component. The engine should increase when doing so if it doesn't replace your IAC...it is located on the throttle body.

Posted on Mar 26, 2011

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Posted on Jan 02, 2017

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1 Answer

What will cause my 2008 gmc envoy not to move when I put it in reverse neutral or drive


  • Neutral safety switch sends a signal to the on-board computer to allow the engine to start and to engage the transmission
  • When not replaced, vehicle may experience no start and/or transmission will not shift out of park.Here's a link to the part,
Duralast Neutral Safety Switch DR4146 Read Reviews on Duralast DR4146

Mar 22, 2016 | GMC Cars & Trucks

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Engine stalls while in drive and reverse runs rough in park or neutral


Begin with the basics......Start with a scan/check parameters

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I have a 99 chevy malibu with roughlt 220 thousand miles... make a long story short I was in a fender bender at about 25 mph. Minor. Impact front left panel. Completely drivable from the scene. Well I only...


Sounds like maybe a motor mount may have broken,if you
open the hood and put the car in drive ,then neutral then reverse
the engine should only "rock" about an inch or so,if it really jumps
that is the problem.

Feb 26, 2013 | Cars & Trucks

1 Answer

2004 Envoy XUV doesn't always crank.


I want to see if i catch your drift ! When you turn the key in the ignition switch to start , nothing happens ? Have you tried moving the gear slector to the neutral position to see if it starts then ? Park neutral safety switch problem , maybe .
Here is a description of how it works or how it's suppose to work .
Circuit Description (ECM/PCM Controlled)
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM)/powertrain control module (PCM) Crank Request circuit. The ECM/PCM verifies that the transmission is in the PARK or NEUTRAL position. With the transmission in Park, voltage flows through the Park/Neutral position switch and feeds the starter relay coil. The PCM then grounds the control circuit of the starter relay. When the starter relay is energized it allows battery positive voltage to the starter solenoid S terminal. On some vehicles the starter will continue to crank the engine with the key released until it starts or the crank command has timed out to prevent excessive heat build up in the starter circuitry or the ECM/PCM receives an engine run flag.
Circuit Description (BCM Controlled)
Moving the ignition to the START position signals the body control module (BCM) that engine crank has been requested. The BCM verifies that theft is not active and sends a serial data message to the powertrain control module (PCM) requesting engine start. The BCM also energizes the RUN/CRANK RELAY. When the RUN/CRANK RELAY switch side closes, and the vehicle is in Park or Neutral or with the clutch is fully depressed, if equipped, supplies voltage to the starter relay coil. The PCM verifies the transmission is in Park or Neutral and the clutch is fully depressed, if equipped. The PCM will then ground the control circuit of the starter relay, closing the switch supplying voltage to the starter solenoid. On some vehicles the starter will continue to crank the engine with the key released until it starts of the crank command has timed out to prevent excessive heat build up in the starter circuitry or the PCM receives an engine run flag.

May 13, 2017 | 2004 GMC Envoy

2 Answers

1997 Carolla- engine dies when shift to reverse or drive, starts again when put in park. Is this a transmission problem or starter/ignition problem?


There is a switch that only only allows you to start the engine in Park or Neutral. It sounds as if yours is faulty or has a bad connection. Finding it will be the problem.

Jun 19, 2017 | 1997 Toyota Corolla

2 Answers

I have a 93 crown victoria and it runs great but more often when I put it into park it doesnt want to start again. I have to reput it in park 3 or 4 times.


Bad PRNDL switch(park/reverse/neutral/drive/low).May be adjustable,but most likely the switch is bad.As a temporary/free solution,try starting in Neutral(USE YOUR PARKING BRAKE!)

Mar 14, 2012 | 1993 Ford Crown Victoria

3 Answers

Wont shift back from 4x4 low, to 2x2


I also have a 2002 Envoy. Shifting to and from 4wh and 4wa can be done on the fly but shifting to 4wL has to be done stoped and while in neutral. Try that. Otherwise I'm afraid its a new computer for you. Its located under the left rear seat and you need a loan for one.

Sep 05, 2009 | 2002 GMC Envoy

1 Answer

Trans in park computor read out on dash reads it is in drive


You most likley have a bent/damaged shifter cable. Unhook it at the trans, and move the linkage, with the park brake set. Push it all the way forward, that is park. The display should change and it should start. If so you will need the cable. Good Luck

Jun 05, 2009 | 2004 GMC Envoy

1 Answer

1994 toyota camry 4 cyl no reverse , only forward in N, 1, 2 ,3


It sounds like the linkage may be out of adjustment a bit. If it is not either in Neutral or Park, of course it will not let the starter engage, Try to start it in Neutral if it will not start in Park, or try it in neutral, and pull or push on it a bit. If it starts when you push or pull it, adjust the linkage that goes to the switch, I think it is under the console cover.

Dec 14, 2008 | 1994 Toyota Camry

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