millerladam
TYF Newbie
- Joined
- Jun 6, 2016
- Posts
- 25
- Reaction score
- 4
I have a 2007 Yukon XL 2500 SLT with the 6.0L Vortec engine. It has approximately 86k on it. It was purchased shortly after this passed Thanksgiving when I blew my Duramax up (that's another story for another time) and was purchased specifically so I can tow my 30' toy hauler while my Duramax is being rebuilt. The maintenance records according to CarFax was spotless, meaning, the vehicle has been meticulously taken care of since purchased new and that I am the second owner. The vehicle was purchased here in AZ and was serviced at the same dealership it was purchased at until I purchased it from Lifted Trucks. I have changed the air filter once, engine oil twice, spark plugs and plug wires. Most recently, I flushed the entire cooling system and changed the thermostat when the truck start running over normal operating temperature while sitting at idle in 100+ degree weather.
Yesterday, we drove the vehicle approximately 30 miles to my in laws. I had no issues on the way to their house until I stopped at the bank to pull out some cash to help pay for dinner. While sitting at the drive up ATM for no more than 5 minutes, the truck reach approximately 225*, which is 15* over my normal operating temperature. I have read that GM deems this as being "normal" however, I refuse to accept that. I have also read that the GMC Sierra's and Chevy Silverado's 2500's with this same body style and engine have a larger radiator and an electric fan in front of the radiator as well as the mechanical fan driven by the crank. Does anyone know if this is true? If so, why the hell did GM not use the same radiator on this Yukon with the same engine? Also, the cooling system doesn't seem to hold pressure. For example, I can easily squeeze the upper radiator hose while the truck is running and at full temperature. Is this cooling system supposed to hold pressure? I changed the reservoir cap but it didn't make a difference. Does anyone have any information about putting the larger radiator into my Yukon from a Sierra/Silverado 2500 from the same year/chassis?
Thank you!
Yesterday, we drove the vehicle approximately 30 miles to my in laws. I had no issues on the way to their house until I stopped at the bank to pull out some cash to help pay for dinner. While sitting at the drive up ATM for no more than 5 minutes, the truck reach approximately 225*, which is 15* over my normal operating temperature. I have read that GM deems this as being "normal" however, I refuse to accept that. I have also read that the GMC Sierra's and Chevy Silverado's 2500's with this same body style and engine have a larger radiator and an electric fan in front of the radiator as well as the mechanical fan driven by the crank. Does anyone know if this is true? If so, why the hell did GM not use the same radiator on this Yukon with the same engine? Also, the cooling system doesn't seem to hold pressure. For example, I can easily squeeze the upper radiator hose while the truck is running and at full temperature. Is this cooling system supposed to hold pressure? I changed the reservoir cap but it didn't make a difference. Does anyone have any information about putting the larger radiator into my Yukon from a Sierra/Silverado 2500 from the same year/chassis?
Thank you!