Originally Posted by EVRose
There is a connector mounted to the side of the fan half way down on the passenger side. Pull it apart and check for burned wires inside each half. Its a common problem on these cars. You can bypass that connector and be good to go.
It's a 3 wire connector. If it appears to the naked eye to be good, then check for continuity on each side of the connector. If you find a bad connection, you can either bypass the connector or buy a replacement. Unfortunately, the GM replacements are worse than the OEM and it's likely to happen again.
Experience speaking here and currently using bypasses.