hello!!! i have a 2006 262 cobalt. out in the boat saturday and out of the blue this beeping starts. checked all the gauges oil,battery etc,etc... ok! the depth finder seems ok and reading. check under the hatch,belts etc etc.. ok! this beeping is going on and on. can't find the dam speaker that makes the noise!! tried unpluging gauges and stuff under the dash to try to find whats causing this!!! any help would be great!!! thanks!! steve