Question about 2002 GMC Yukon Denali

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2002 Yukon Denali will not start

My car was running fine but when I went to start it, I turn the ignition and it sounds like it wants to start but doesn't. The check enging light did not come on.

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  • novak1973 Sep 22, 2008

    My 2002 yukon xl denali wont start intermittenly? It will turn over and sounds like its not firing? I will leave it and come back and it will start? Does not matter if its hot or cold, happens in both cases.It will be fine for days then happen for no reason? Very confusing and frustrating?

  • Anonymous Dec 22, 2008

    ive got an 01 it did the same thing then the fuel pump went out

  • tomr4470 Dec 27, 2008

    my 02 will start, after running about 15 minuets it will stall, then it must sit for several minuets before it will restart, then again it will run for a bit, then stall again

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I have the exact some problem 01 Yukon 5.3 – Sometimes my security light also comes on for no reason? Wonder if this has something to do with the remote starter? When this does happen all I have to do is wait for 15 minutes and it fires up just fine. Pisses me off though…

Posted on Sep 29, 2008

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Posted on Jan 02, 2017

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1 Answer

2002 Yukon Hesitation when starting- No checking engine lights!!


This can be fuel pump related or just fuel filter related, spark plugs and injectors.
When engine is cold vaporization of gasoline is minimum. When fuel vapor is less than required and the fuel mixture is not ideal, ignition happens harder than it does under ideal running conditions of engine. When fuel pups is sweak, or filter is limiting, or fuel injectors are not injecting gasoline with improper pattern inside engine, or just becasue of corroded spark plugs, cold engine faces difficulties during first ignition.

PS: sometimes car starts and stalls.it fails to start once more. this can be a sign of broken crank position sensor. FYI.

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