Question about Chevrolet Silverado 1500

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When ever it rains or the humidity is high and the truck sets for several hours it will not start. It turns over but it will not start. I appears to be getting fuel, but the spark may be weak. I have replaced the coil, distributer cap, plugs and ignition module. But the problm persists, I have been working on this problem for well over a year and have taken it to a mechanic and he replaced a couple of eleectronic components but the problem persist.

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What is the specific year make model and engine size? Would check the crakshaft position sensor and the wiring to it. It's quite possible it may be cracked.

Posted on Apr 10, 2011

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