New from Arizona

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Cageman

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Hi just picked up an 2000 Yukon Denali. Has a few issues hoping to get some help here.

Thanks
Neil
 
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Cageman

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Idles fine in park gets rough when in drive. Put plugs, wires, cap, rotor and fuel filter on it still idles rough in drive but seems to have good power driving.
 

sbubbaklein

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any codes in the computer. Missfire codes can determine which cylinder you have concern with. Pick up a code reader at your local parts store, some even will read your truck for free.

Otherwise hold it closer to your lap top so we can see it clearer, it is a bit out of focus.

Thought about it and suggest you check the fuel pressure, pump may be going out, clogged fuel lines, filter picking up trash. Could drop the tank and clean it out or put some magic in a can in the gas tank.
 
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sbubbaklein

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I had problems with my 1990 454ss a couple o years ago. They finally dropped the tank and found a flexible rubber fuel line on top of the tank that was cracked and leaking air into the fuel system. was no fuel smell, performance got worse as the fuel pump heated up.
 

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