Concerns about purchasing GM Diesel Truck
Looking to upgrade tow vehicle and finding a good used vehicle in my price range is a challenge. See lots of Diesels in my price range with around 125000-150000 miles. Is that too much and what shoul...
Forum Discussion
I have an 05 LLY and at 134k the HGs are fine. There are plenty out there that haven't blown regardless of their build date. But, never say never.
That said, GM cranked up the power and didn't increase the cooling. They will over heat if you tow heavy going up 6-8%+ grades in 100+ temp. I added the secondary radiator and it solved the problem. Nothing short of that will fix the problem. Flat ground is fine without it but start climbing where you can't go fast and keep a good flow over the radiator and they will heat up. If you can get some speed like above 30 MPH it helps since you have air moving through the cooling radiator, but when you have to go slow so you don't die going over cliff they you are dependent only on the radiator and fan and they aren't big enough. The LLY needs more cooling. I have both Ron Davis primary and secondary radiator (E837.)
I love my LLY. Tow beast.
2005 Chevy Silverado 3500LT SRW D/A CC/LB LLY 4x4 (loaded)
LBZ MP, TxCAI, Stack sealing, Mass/IAT shield, LML manifold
Edge Insight CTS/EGT/EOT
E837 HD Radiator w/EOC + E837 Secondary Cooling Radiator w/fan, factory air dam
Earl's trans cooler, Longs Power Steering Cooler
GM Severe Duty brake rotors (SD suffix)
NuWa Hitchhiker II LS 29.5LKTG 5th Wheel (11klbs)
That said, GM cranked up the power and didn't increase the cooling. They will over heat if you tow heavy going up 6-8%+ grades in 100+ temp. I added the secondary radiator and it solved the problem. Nothing short of that will fix the problem. Flat ground is fine without it but start climbing where you can't go fast and keep a good flow over the radiator and they will heat up. If you can get some speed like above 30 MPH it helps since you have air moving through the cooling radiator, but when you have to go slow so you don't die going over cliff they you are dependent only on the radiator and fan and they aren't big enough. The LLY needs more cooling. I have both Ron Davis primary and secondary radiator (E837.)
I love my LLY. Tow beast.
2005 Chevy Silverado 3500LT SRW D/A CC/LB LLY 4x4 (loaded)
LBZ MP, TxCAI, Stack sealing, Mass/IAT shield, LML manifold
Edge Insight CTS/EGT/EOT
E837 HD Radiator w/EOC + E837 Secondary Cooling Radiator w/fan, factory air dam
Earl's trans cooler, Longs Power Steering Cooler
GM Severe Duty brake rotors (SD suffix)
NuWa Hitchhiker II LS 29.5LKTG 5th Wheel (11klbs)
