Question about 1999 GMC Yukon

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I have tried every thing to set the timing on my1999 gmc yukon me and 4 other mechanics are stumped any suggestions please im desparate. Again I have replaced the timing chain, the ignition cotrol module, cap and rotor, coil, crank sensor, cam sensor, im getting fire but no start

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Was #1 cylinder top center conjunction with distrbuter botton on #1 plug was cam gear matched with crank lined up

Posted on Nov 29, 2011

  • kushkloudzgy Nov 29, 2011

    Yeah it was lined up the computer fried I gave up got me a dooley :) thanks though

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You have spark at the plugs right? Have you checked fuel pressure? It has to be 60 psi or it won't even fire.

Posted on May 30, 2011

  • 2 more comments 
  • kushkloudzgy May 30, 2011

    Spark plugs are right and fuel pressure is good its gettin fire and gas but no start.

  • kushkloudzgy May 30, 2011

    It acts like its about to start then you hear psshhhhh and it loses it

  • Clint Smock
    Clint Smock Jun 01, 2011

    After it quits is the security light blinking?

  • kushkloudzgy Nov 29, 2011

    Gave up computer fried and got me a dooley :) thanks though

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1 Answer

2000 GMC Yukon 1500 xl 4wd. Service 4wd lights only after more an 100 miles drive time. Nothing wrong with tfans. Can't find relay in elect center.


I believe this is a reminder set in the computer and would have to be reset by a dealer or mechanic. I have the same thing happen in my 04 Suburban.

Sep 16, 2017 | GMC Yukon Cars & Trucks

1 Answer

2002 4.8l gmc yukon oil pressure problem


My suggestion would be to check it with a mechanical gauge.
You would need to use a Tee fitting to use the sensor to have fuel pressure.
If the mechanical gauge shows steady pressure at idle, it could be a problem in the wiring or the instrument cluster.

Jan 27, 2013 | 2002 GMC Yukon

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I have a 1998 gmc 1500 350 vortec. just replaced 8 leaky fuel inj. now it has smoking exhaust no power terrible gas milage . and the plugs on one side of motor r fine but the other side...ALL 4 plugs r...


The 8 leaky fuel injectors might have been caused by a bad fuel return regulator. But, that put aside, the 4 plugs misfiring on one side can be caused by a bad computer or connections to the computer.

Aug 18, 2010 | 1998 GMC Yukon

1 Answer

1998 Yukon high idle sound with bad gas mileage.


What you have is the torque converter clutch,cycling on and off.
When it is off.your rpm will go up and your milage will go down
First-check to see if your brake switch, on the back of the brake peddle, is loose or misadjusted. When you apply the brakes,the first thing to happen, is that you unlock the converter,so your trans is not connected directly to the motor,or you would stall. Then below 42 MPH,your trans is working off the converter, as a pressure multiplier ,based on rpm
Second- switch okey. You remove trans pan and change TCC Solenoid.

Let me know if if you need more guidance

May 08, 2010 | 1998 GMC Yukon

1 Answer

Buzzing sound coming from engine compartment of 2002 Yukon


you might check and see if you have a noise suppression filter on the alternator,it sounds as if this may be your problem.

Apr 29, 2009 | GMC Yukon XL Cars & Trucks

1 Answer

Need instructions on changing drivers side 2000 Yukon/new style window regulator. Have the new part, just need instructions.


i have replaced all four window motors on my 2000 yukon. I actually did the passenger side front today. It was a nightmare! if you don't have the the cables set right when you install the new motor/regulator it won't work right and it becomes extremely difficult to set right. I suggest having someone do it for you if you are not patient and handy. if u do go for it make sure u lay it out flat and upside down so the screws are facing u from the motor/regulator and do ur best to make sure that the cables are exactly where they were when u took off the old regulator/motor. this is again very difficult. took me about 4 hours and got very sunburnt on my neck! I am not a mechanic but a do it yourselfer. Last time I did the driver side i had a mechanic give me a hand and it took about an hour. Also make sure you wedge the window in with a stick or screwdriver so it won't drop while working on the door. If it is the cables u are replacing it is the same project. they are all interlinked. good luck and hope this helped.

Mar 22, 2009 | 2000 GMC Yukon

1 Answer

Purchasing


That's a lotta miles!! My suggestion would be to take the Yukon to a reputable mechanic and pay the $50 to $100 to have him check it over. Specifically have him check the compression, suspension, transmission, clutch, (if manual), AC (if applicable), etc and then get his opinion. Good luck

Oct 13, 2008 | 1995 GMC Yukon

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