I've had my 2000 Astro AWD for 2 years now and the only major issue I've had is a tendency for it to get hot when temps are over 90 and I have the A/C on. I'm planning to replace the fan clutch and serp belt, plus install a tranny oil cooler. I just had the Dex changed 3 weeks ago and was wondering if I should go ahead and replace the Water Pump while I'm in there ?