Took the vette out this morning for a good 1.5 hour drive...after I come home i realize its pretty dusty so i rinse it down with water and dry it off, leaving it in the front driveway.

Now (over 4 hours later) I go out to the car, and i realize the blower/vent fan is running. I thought maybe i left the key in the ignition so i check but there is NO key. The fan/vent/motor was running and the key was in the house! I figure it might be a loose battery terminal so i completely remove both terminals (let it sit for 5 minutes) and then reinstalled them. It kind of goes away for a few minutes...so im sitting in the car, checking the DIC for codes and there are none. All of a sudden the blower comes on (it blows through the "defog" vent on the top of the dash) and then it slowly disappears. Then it would come back on (not at full blast) and slowly die off. Its almost like its temp dependant, or maybe a bad ground...but it doesnt do it all the time...it just randomly turns on and off. I figured id pull it in the garage and out of the sun light and see if that makes a difference.

Maybe its a bad interior temp sensor, or dual zone control/display...who knows...i didnt look at the fuses as i figure the van is turning on and off but again, who knows!

Anyone ever heard of this before?

 

Weird huh?

BCM?

 

No one knows anything about this?

I pulled the BCM out of the car, checked fuses, wiring (what i could see of it), and both of the grounds for the BCM.

It seemed to go away but it came back yesterday after sitting outside in the sun for some time. Seems like when the interior gets warm, it strts doing it more...