My stepson has a 2001 GP GT, 3800 Series II...first, two days ago, heading for the house, car overheats, find crack in radiator on passenger side of the car, near where hose attaches.
Replace radiator today, car initially overheats, replace thermostat, temp holds to about 185F, after idling for about 20 minutes. Take the car out of the driveway, drive no more than 1/4 mile, radiator has crack in same place.
Where's the pressure coming from to cause the cracked radiator?
Second: Car is running poorly. Rough idle, will not rev in park past 3500 rpm.
Suggestions?