May 5, 2005My 95 Sierra 5.7L will not warm up to temperature. it used to run about 180-190ΒΊ normally. I lost all my coolant once and had it fixed. Ran good for a while then the temp wouldnt come above 140ΒΊ. I drove it like that until last winter when I lost all my coolant again on the ground. My dad fixed it. Replaced the waterpump and thermostat to a 195ΒΊ and flushed the radiator. It was good for a couple months then the temp went back down to 140ΒΊ again and stayed there and thats where it currently resides now...I didnt drive it all winter either but it was like this most of last summer. My dad seems to think I might need a new radiator. Any thoughts on all of this and if anyone knows what dimension radiator I can fit in there that would be good. I plan on getting electric fans anyways.