This will be the 5th heater core that will need to be replaced, it was replaced less then 2 years ago, the 2 prior to that i paid out of pocket, and the first 2 were under warranty. My boyfriend is a great mechanic but does it as a hobby. I've found 2 different ways to replace it under the hood or under the dash. Its not on the left under the hood, its on the right. Hes going to let me help replace, but why does the 97 seem different than the 98. I love my Monte but this is a joke. Help thank you