I have a 2000 LeSabre. For several years now, the message center that displays the odometer, and other messages has had a condition in which the connection between the computer and the display seems to have become susceptible to shorting by the humidity in the ambient air. After the A/C has run for a while and removed humidity the problem ends and the display again works, ungarbled. In sub-freezing weather with no moisture, the display seems to work, until it warms, and if long enough for moisture to evaporate, works again. This has been an annoyance, but didn't affect the operation of the car. Recently, the disrupted connection phenomenon seems to now have occured in a connection somewhere between the computer and the cylinders, such that the engine misses during times of moisture. Again, during sub-freezing temperatures the engine runs fine without missing, and as the heat from the engine warms the car, the occasional missing recurs, often causing the check engine light to turn on. In severe occurences the light blinks. The GM dealer wants to simply replace plugs, wires, and coil, which I am confident will accomplish nothing more than drain my bank account. Where can I find the resource to track the problem down in the computer controls and connections to fix it, or someone who can do it for me? Thanks.

Hello, Im having severe power loss in my Chevy Beretta. Driving normally down the street, it works fine, excelerates just fine on flat roads, but hill at all kills it, i can barely make it to 35 mph in canyons I used to cruise at 70. The fuel pump has been replaced very recently. Any ideas?