Question about 2000 GMC Safari

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GMC Safari 2000 won't start after rain, damp, moisture

GMC Safari 2000 won't start after rain or damp weather. If it does start, it will run for few km and die. It won't start again until few minutes go by, and then will go on only for another few km. When I opened the engine compartment from inside the car, i noticed sparks / arching between the coil (i believe it's called ignition coil - closer to passangers side) and the wire which is running to the coil from the distruvution cap. With the car running, as i pressed the gas peddal more, it would spark more. To get home i taped the coil in the area where it would arch with elextrical tape, and was able to make it home - only with one more stop, however i could still see the spark jumping once in a while. Wondering if it's a bad coil (replaced a year ago), bad wires (Bosch - i know GM cars like their ACDelco parks) or something else all together. It seems to be a common issue with these GMC Safari's - however i wasn't able to Google the correct solution for this yet. The van drives OK when it's dry outside. Any input would be appreciated.Thanks, Dominik

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  • ve1au Mar 30, 2009

    Van runs very rough in damp weather. Hi voltage arc from hi voltage turret to ground and primary connection block. I wentt to the local GM Dealer this A.M. They told me that this would not be under warranty this time, as they never had 7 coils in a row go bad in one year. Got the song and dance that there was something else causing the coil to arc. I have replaced the GM platnim spark plugs, rotar button and distributor cap, as well as the wire set. This last cil has been on the vehicle for 11 days.



    Looking at the insulation around the hi-voltage turret, it appears to be very thin, not really thick enough to suppress 25 kv. I suspect these coils, including the GM units are being made off shore, and have insufficent hi-voltage breakdown.



    Would be interested in what solutions others have found. Am thinking about doing away with that exposed coil and putting in a new hi-performance coil such as used in racing cars. Any one have experience doing this?

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I'd replace the wire set.

Posted on Feb 27, 2009

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