Question about 2000 GMC Yukon Denali

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2000 Gmc Yukon Denali wont start i changed fuel pump and filter

I changed plugs cleaned maf all sensors on and around the intake, also removed intake and cleaned injectors and throtle body double check everything it has fuel at 60psi and spark but i had a freind start it and had my hand on the air intake hole where air filter is and had to much suction it made my hand red it would stay on a little bit longer but turned off. need help.

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  • Anonymous Feb 10, 2009

    Also my Security light will blink on and off when attemping to start. Is there a way to bypass the stock alarm, because i changed cylinder key with housing and housing doesnt have a input for security plug. Can that be the problem.

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Your getting too much air in chamber on igintion probly cause by a faulty intake and or a faulty tps (throttle positioning sensor) sounds like intake is sucking more air that fuel which is giving a bad air fuel mix in chamber also try checking your mass air could be faulty as well

Posted on Feb 10, 2009

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