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I just traded up to a 17 2500 from an 09. The 17 has a periodic whine or roar rather coming from the engine compartment. Doesn’t really seem to be related to a/c as it does it when climate is off. Thought maybe a clutch fan issue. It happens hot or cold. Truck only has about 10k miles so I can take it to dealer, just wondering if this was normal on the newer trucks.
It could be the V V T's at work. Variable Vain Throttling is in the turbo. It is also your exhaust brake. They use it for the emissions and maintain the engine temps.
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
walla2k5 liked this post
@Polaraco it could possible be the turbo, but wouldn’t most of that noise come from the tailpipe. It almost sounds more like an electric fan cycling on.
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