Chevy 2500 HD 6.0 question
I’m towing a 7500 lb. Cougar 28SGS. The truck I have is a 03 Silverado 2500 HD 6.0 with 4.10 rear. This rig tows fine in cooler weather with no A/C and fairly flat to moderate hills. When I pull in de...
Forum Discussion
Pure Diesel wrote:
Check the cooling stack. Has it ever been cleaned out? Over time, miles, location, debris and bugs can block the air flow going through.
Yep, make sure the cooling stack is clear. Also as mentioned, make sure your fan clutch is working properly and flush the coolant system. If you’ve never serviced the coolant you could have sludge that’s reducing flow. Don’t go to a cooler thermostat, this will throw off the computer.
When you’re climbing a hill you should head a roar like a siren when the fan clutch locks up. If you don’t hear that it probably means your clutch is bad.
