Question about 1999 GMC Yukon Denali

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Starter kick back

Okay help please.We have a 99 yukon when it rains or we wash it it goes nuts!!will run fine than will start to shake,bog down ,like no power,hit gas and it shutters and chugs a bit than will start to go than bog down again.than comes out of it

Till now we had to replace starter,Thought it was fine! we washed it no problems drove about 30 miles and shut it off,went to leave no start.Starter kicking back,crank over no start,whole motor clunking.Would not stop kick back.starter spun out smoking and all.Replaced again fine.Than we washed it.drove about 15 miles started to run like ****.smelled like sulfer or a match that was put out,dying out,back fireing,while ideling.tried to take off bogged down ,no power would hardley go than.took off and than bogged down again.dies in itersection coasted to side of road.shut off tried to restart no go.starter kicking back,broke bolt off right in block,Changed crank position sensor,still kicking back and broke off another bolt any ideas?

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  • mouthymeyer Feb 05, 2009

    Thanks I will give it a try but it will not start at all.Starter just kicks back,clunks and grinds .I know it is getting fuel cause it is flooded



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If this is a gas engine, check the ignition coil or plug wires. A simple test...

Start the truck at night, then look under the hood while it's running. Don't use a flashlight or your headlights; it should be dark !

If you see sparks anywhere around the engine, you've found the problem. Now you can turn on a light to see where they're coming from - probably from a cracked ignition coil.

Good luck !


Posted on Feb 05, 2009


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