1999 BCM question.
 

Hello,

I have a 99 coupe with 47k miles. Recently the dash started going nuts. Reduced engine power,temp maxxed, oil pressure; zero, windows don't work, yet the car runs fine. Stop and restart will fix problem for 1 mile or 100 miles. I ordered a reman BCM from Fichtner Chevrolet in Montana for $188.00, one tyear warranty. However, for the past few days, not one malfunction. I live on the beach in Florida. Could this be a simple grounding problem?

Welcome to the forum.

Might scan for codes. Checking all of the grounds would be a good idea.

Also might post over in the C4 section for more views.