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You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, GMC Sierra 2500, Chevrolet Silverado 3500, GMC Sierra 3500, Truck
#180 of 402 Chevy Silverado 6.0 litre Overheating Problems
Aug 23, 2008 (2:05 pm)
I have a 2003 chevy 1500 hd 6.0 litre,..w/ 93k miles...It is overheating quickly, i can start it cold and in 5 minutes its overheated,..The engine does not miss or run rough,it runs very smooth,The service engine light isnt on...There isnt any water in the oil, The water pump and thermostat are new,..the radiator looks very clean,..I cant find any water leaking from the block, heads or intake..And its not the temp gauge because the coolant is definately overheated...ive tried two different thermostats..Im baffled,..Can anyone help?..
#181 of 402 Re: Chevy Silverado 6.0 litre Overheating Problems [treedog]
Aug 23, 2008 (3:58 pm)
Both the waterpump and the thermostat could cause the problem you're describing. Think either one was defective?
#182 of 402 Re: Chevy Silverado 6.0 litre Overheating Problems [obyone]
Aug 24, 2008 (7:28 am)
Well this is the second thermostat ive tried, so i doubt two would be bad,..And the water pump seemed fine outa the box...is there any test i can do to check them without removal?
#183 of 402 Re: Chevy 5.3 litre Starts and Stalls out [cajama]
Aug 24, 2008 (7:41 am)
o.k, i changed the iac and it still wont start, just starts and instantly stalls,any suggestions?...battery is about 4 months old,..the headlights and radio work fine....
#184 of 402 Re: Chevy 5.3 litre Starts and Stalls out [treedog]
Aug 24, 2008 (9:59 am)
It went from overheating to a non-start issue?
#185 of 402 Re: Chevy 5.3 litre Starts and Stalls out [cajama]
Aug 24, 2008 (10:36 am)
Update: ok well i found the problem, We've had 4 days a flooding rain in Forida this week from tropical storm Fay, I guess mice or some type of rodent went looking for higher ground and decided to make there new home under my dash ,..Several wires were chewed in half..Fixed the wires and that fixed the problem..We are up and running again....Thanks..
#186 of 402 Re: Chevy 5.3 litre Starts and Stalls out [obyone]
Aug 24, 2008 (10:40 am)
No, i have two trucks ,..Notice one is a 2001 w/ 5.3 litre....and the overheating truck is a 2003 1500hd with the 6.0litre....i just fixed the 2001 5.3...Still need help with the overheating 6.0 litre though...
#187 of 402 Re: Chevy 5.3 litre Starts and Stalls out [treedog]
Aug 24, 2008 (10:50 am)
For the vehicle to overheat to the redline in 5 minutes we're talking about either
1-no coolant circulation
So it's either something blocking the coolant from passing through the radiator or a bad fan clutch. I'm assuming if it was the fan you would've noticed. Do you know if they back flushed the system when installing the water pump/thermostat?
#188 of 402 Re: Chevy 5.3 litre Starts and Stalls out [obyone]
Aug 25, 2008 (8:29 am)
ok , well it has coolant, so im guessin it would be no circulation,...i dont know if they flushed the system....i took off the top radiator hose and coolant comes out when running..so im guessing coolant is getting that far..
#189 of 402 Re: Chevy 5.3 litre Starts and Stalls out [treedog]
Aug 25, 2008 (9:14 am)
You might want to check if the thermostat is installed correctly and if there are any kinks in the hoses. Since the water is moving we can assume the water pump is working.
Check the hoses by squeezing them.