Coolant Leak & Engine Overheating on Pontiac Montana

Problem Description and Possible Solution

A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.

Problem Data
RepairPal Verified
Average mileage: 141,445 (26,672–239,000)
Engine affected: 3.4L V6
7 model years affected: 1999, 2000, 2001, 2002, more2003, 2004, 2005
26 people reported this problem
Viewing 1 - 11 of 11 comments
temp gauge topped out into the red zone when at an idle. thought it was a relay or bad fan. shop trouble shot to a leaking water pump and replaced the water pump and did a coolant system pressure test, flush and fill. Two days after I got it back, it showed signs of coolant leakage (it has never had any leaks in the past) and now the radiator is wet at both corners and coolant is dripping.
Coolant leak at left front under radiator cap. Found leak at radiator core tank seam. Replaced radiator core.
I didnt get it fixed yet my antifreeze is going down and now going from radiator to tank was just going i dont know where had to put antifreeze in there every day
Overheating, replaced intake gasket, freeze plugs and hoses. Still overheating, bled the lines. Seemed to help but the next morning was overheating again.
Just started leaking about 5 days ago... engine overheating, heating system obviously effected now and currently rushing to get repaired.
Engine Coolant light has came on for twice in two weeks, I've replaced it every time the light has come on. However, it seems that there is a leak somewhere between the reservoir and the radiator.