Review on Enhance Transmission Performance with GM Genuine Parts 29535617 Automatic Transmission Fluid Pan Magnet by Tom Goodlow

Install two of these. You can find recommended mounting locations on the GM forums if you search. I found the magnet to fit perfectly on the drain plug on my Dorman 265-184 trans pan (with drain plug). Don't forget to set the other one exactly as recommended - it's under the filter. Check the polarity and line them up so the poles go the same way so they work together and not against each other.