This is on a 2013 Chevy 5.3 with 35 inch tires. Truck overheats driving at 75mph. Does anyone have any idea what I should be looking at to fix the issue?
anamishguy
What gears? Was the ECU reflashed for the tire size? That shouldn't be it though.
Remove your grill and inspect your radiator. Over the years, there's buildup and gunk that accumulates on them. You have to remove the radiator and power wash it.
Was the truck running good at some point? Anything you did or change to it and then it started overheating? I kinda got the impression it started overheating when you installed the oversized tires, but I can't tell.
...more information from OP is needed...
Remove your grill and inspect your radiator. Over the years, there's buildup and gunk that accumulates on them. You have to remove the radiator and power wash it.
Was the truck running good at some point? Anything you did or change to it and then it started overheating? I kinda got the impression it started overheating when you installed the oversized tires, but I can't tell.
...more information from OP is needed...
blocked radiator, blocked line, or issue with water pump
im going to guess pump because the other issues would cause you to overheat all the time. a bad pump might not push enough water at low highway cruising rpm
im going to guess pump because the other issues would cause you to overheat all the time. a bad pump might not push enough water at low highway cruising rpm
Here in West Texas where it gets over 100F for 3 consecutive months in a row ..... Just a bad idea to be running around with a poorly maintained cooling system.
When I first bought my old 1991 truck, I pulled and flushed the radiator both directions and cleaned it outside also.
I installed a new water pump, T-stat, all mew hoses and a serpentine belt .... Is simply called maintenance when you have no idea what was done to it in the past ..... While it takes a little time to complete, is pretty cheap compared to a flatbed tow home or a burned up engine.
Or sitting in the desert with no shade for hours waiting for a tow truck to arrive.
Tall 35" tires will make the truck work harder at a dead stop, but going down the highway your engine is actually working less ....
I use to run 33's on a old 65 chebby .... tires were not a issue and 35" on a modern truck ..... I say your tires have nothing to do with it.
Your cooling system is pooched and it is best to just go through all of it.
When I first bought my old 1991 truck, I pulled and flushed the radiator both directions and cleaned it outside also.
I installed a new water pump, T-stat, all mew hoses and a serpentine belt .... Is simply called maintenance when you have no idea what was done to it in the past ..... While it takes a little time to complete, is pretty cheap compared to a flatbed tow home or a burned up engine.
Or sitting in the desert with no shade for hours waiting for a tow truck to arrive.
Tall 35" tires will make the truck work harder at a dead stop, but going down the highway your engine is actually working less ....
I use to run 33's on a old 65 chebby .... tires were not a issue and 35" on a modern truck ..... I say your tires have nothing to do with it.
Your cooling system is pooched and it is best to just go through all of it.
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