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10-17-2011
I have a 03 GP GT and I am having overheating issues. It has done this in the past and changing the tstat usually work. this time changing the tstat did not help. Any suggestions on how to fix this? I had an old guy tell me that I need to have my system flushed and it should fix this problem. I have never had the syatem flushed since I have owned the car (5yrs) It is my dd so it needs fixed soon. Please help???
10-17-2011
I dont know if getting a flush will fix the problem. You should get a flush anyways to get the orange GM dexcool out of the system. Have them refill it with the standard green coolant. GM Dexcool is known for leaving large amounts of sludge at the bottom of the radiator.
10-17-2011
Originally Posted by 99regalgs
Thanks. Do you have any suggestions about the overheating?
10-17-2011
can someone please help me. I really can't drive the car until i get this figured out.
10-17-2011
Have you maintained the coolant and had it changed out at the 5yr or 150K miles as expected?
Is there sludge on your radiator cap?
10-17-2011
I haven't changed the coolant since i have owned the car. It only has 127k., but changing the thermostat i noticed the coolant was a rust color. Would this casue it to overheat? This is the 3rd or 4th thermostat I have changed since owning the car. I am not to sure on certain areas of the engine and really don't want to screw soemthing up. We can't afford for one of our cars being out of commission.
11-08-2011
ive been having this problem too, my mechanic flushed it out, no go, so he replaced the radiator and tstat, worked temporarily but the problem came back, hes recommending i get the headers and engine checked for cracks or leaks, he thinks theres a chance its creating an air pocket in the system thats not allowing it to cool down the engine properly. I think i explained that the right way, but either way my car's out now getting the headers checked
11-08-2011
Headers are an exhaust part...I'm guessing you mean the heads
11-08-2011
And have you checked the lim gasket...cuz its a known spot to **** as well
11-09-2011
yea they're checking the gaskets too, but he def said headers, i didnt mishear him, maybe he meant heads, or maybe he thinks the exhaust is somehow getting into the coolant system and creating an air pocket, i dont see how but thats wat he said, maybe he made a mistake in explaining it, he did seem like he was tired at the end of a long day and barely able to frame a thought lol
11-09-2011
I don't like people in that state working on my car....hopefully he clears up in the morning
11-09-2011
I swapped my moms them then she went to a shop they did 2 flushes still filled it with the orange crap and another new therm and hers wasnt getting up to temp tho. I jacked the car up then bled the system using the bleeder screw on top of the them. Worked perfect. I know opposite issue but could cause same probs I think. SOmeone will correct me if Im wrong
11-10-2011
Dex cool is satan
11-10-2011
Lol my poor GS has had it for its whole 13 years.
11-13-2011
i heard back from my mechanic, he did mean heads. anyways originally what had happened was that someone mixed in some other coolant or liquid with the dex-cool and it combined and formed some kinda silicone solid, my mechanic showed me some gooey ****, thats what clogged everything up, but the heads were also in bad shape so theyre in the process of being repaired
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