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    annette3130's Avatar
    annette3130 Posts: 1, Reputation: 1
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    #1

    Mar 11, 2010, 10:41 PM
    I have a 2002 gmc sonoma that won't start when it rains or is humid outside?
    The truck cranks over, and the voltage on the battery good its new. I have changed the distributor cap, spark plugs, but not the wires. It has a new fuel pump & yes it has gas. The battery cables & terminals are clean. It has a new starter & a new alternator.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Mar 12, 2010, 08:06 AM

    The link below should help:

    https://www.askmehelpdesk.com/cars-t...tml#post520809

    You may get by cleaning the spark plug wires with a clean rag and silicone spray. Keep the silicone spray away from the oxygen sensors. Best bet is to replace the wires. I recommend replacing them every 80,000 miles.

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