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i have a 98 c5 and it wont start. when i open the door the light wont come on then when i try to start it it wont even turn over. if i just leave it in the acc on the key it will say all these alerts like low fuel,reduce engine speed, ect but if i disconnect the batt and reconnect it it starts any ideas....
ya man i drove through this wicked rain storm then later that day after it wouldnt start!!!! how did yours get wet? how much did it cost? where did you get it?
Big rain storm and a flash flood hydrolocked the engine and when the previous owner abondoned ship water came in the pass floorboard and got the bottom of the BCM wet. I got the car CHEAP because of it. New rebuilt engine $250 from a guy who just totalled his 00 Z28, BCM from E-bay for $150. Had to do the handshake thing 10mins key on, 5 secs off 3 times in a row to get the computers to make friends and work together, but now runs drives great. I had the exact same problems you describe plus the hatch would not pop.
I actually took my BCM apart and found a burnt pathway on the circuit board and tried to solder it. Then when I plugged it back in I blew some fuses, so don't bother doing that...LOL