Driving/shifting questions

mpjman

New member
Jun 22, 2020
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So i just bought a 2019 3500hd duramax. I have 2 questions

1)Ive noticed when I'm driving, and i take my foot off the gas pedal, before applying the brake that the truck seems to slow down on its own, rather than maintain speed. Mor eon hills but everywhere. Is this normal?

2)When driving, the truck seems to shift fine, but when i get to about 35-41 mph, the rpm garage seems to stay up around 2k, but then drops to 1500, and when I'm on the highway it stays up at around 1700-1900 at 70mph. Is this normal? I have 285's on it

Thanks guys.
 

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