I have a 94 Caprice Classic with a LT1 engine in it. I have a ? for anyone who can help on it, my car shakes when it drives for a long time and the check engine light comes on and i will hit the gas and it just not driving. I changed the spark plugs, Wires, new cap and rotator, water pump, and ingnition modeule if you can help me find the problem or ideas that will be great

 

Love that LT1 corvette motor. I am not sure I understood the whole problem, but have you checked your motor mounts?

 

Its really hard to explain when the car is on all i know that when im driving for a certain amount of time the muflers start to back fire a little, and i hit the gas and no power is going through. and the check engine light comes on and its not drivable. The dealership even put it on the computer and the computer couldnt find anything wrong with it so i dont know what to do. Thank you for helping me thats the only way i can explain it more if that helps a little more.