Greetings folks,

We just purchased an older Grand Prix for next to nothing with, what we assumed at the time, a blown HG. I started browsing these forums looking for a good how-to for HG replacement when I began seeing various posts stating that chances are LIM is the issue and not the HG. So what is a good way to check and see which one is the culprit? Or should I just replace everything at once?

For the record I can't remember 100% which engine it has but im pretty certain it is the 3.1. We're going tomorrow to tow it so ill get all the specifics then.

Thanks in advance,

Adam