1995 GMC Truck V8 Four Wheel Drive Automatic 172000 miles
i have a 95 gmc k1500 4x4 truck. My problem is when it rains something gets wet and the engine will start to idle up and down. It does it until it just shuts off. I have replaced the distributor cap, the rotor button, the coil, and the coil wire. So if anyone can tell me anything else that I haven't tried it would much appreciated.