[Cathy Young]

So about two weeks ago I hear a whiny noise from the engine that increases on acceleration but stops after a few days. Several days later I notice the water was low and that there appeared to be a leak under the radiator. The radiator was replaced and the codes showed the BCM might be going bad. The next day water was again leaking and this time it appears to leak from the water pump gasket to the engine. Is the water pump a coincidence? Or could the BCM be causing multiple failures? Could the code be wrong? The van has about 148,000 miles.

[George]

The BCM will not CAUSE a failure to an engine part or make a leak. A code for a bad BCM is just a coincidence and needs to diagnosed as a separate issue.

For the leak and noise, it would think that the noise was cause by the coolant at the water pump getting on the belt and causing it to whine. Or possibly yht bearing on the water pump is going bad causing the whine and leak.

[Author]

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