Question about 1999 GMC Jimmy

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I have a 1998 jimmy which turnsover but will not start. Check the spark the coil only sparks when you turn the key back to off position.

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  • d_laury Jul 18, 2009

    I can not find the coil resistor do you have a picture or what is it close to.

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You need to replace the coil resistor on the back of the firewall. it's a 3 inclog ceramic square device with a wire on one end and two on the other, it lowers the voltake when the key is in the run postion to keep from burning up the coil when it shorts out it does what you are talking about it costs $20.00

Posted on Jul 18, 2009

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