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Discussion Starter · #1 ·
I encountered this problem with the 2014 Cruze Diesel (109K miles) automatic.
Going down a hill, braking to reduce speed, the rpm suddenly went up to 2000 and the car would not slow down until I re-applied brakes. Happened twice one after another—no issue with accelerating from a complete stop.

If it's an engine or powertrain I have a 3-month warranty and should get it taken care of.

Also a consistent rattle in the steering wheel and floor board (the tire shop did wheel alignment and balance, so can't be wheels related anymore). Could this also be a transmission issue?

Original transmission at 109K.
 

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2014 Cruze Diesel, 2007 Cobalt, 1981 Camaro Z28, 2017 Volt
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Are you sure it's not just in-gear and engine braking? The diesel does that on its own pretty frequently.
 

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The second generation diesel manual transmission doesn't really have engine braking when you down shift like a traditional manual transmission back in the day. It does have some but don't rely on it too much. It's not that effective.
 

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Are you sure it's not just in-gear and engine braking? The diesel does that on its own pretty frequently.
This. Always drove me nuts because the hills by me are pretty steep (10-12⁰) and the car would be pretty aggressive in the AM with a cold motor. I always overrode by moving the shifter over before it downshifts or forcing it to upshift then back to D on flatter roads.

Does the rattle noise change with wheel speed? Or engine RPM? That would suggest something loose or broken.. or do you mean a vibration?
 

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2014 Cruze Diesel, 2007 Cobalt, 1981 Camaro Z28, 2017 Volt
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How long have you owned this car? The transmission is pretty aggressive.
Very much so. Add in the VGT operation and you almost get a mini exhaust brake with the vanes closed.
 

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Definitely a feature, not a bug. Driving in the Virginia mountains on the way to VIR, I very predictably get a lot of hill decent control type events. Works great for not roasting your brakes coming down the mountain back roads.


Sent from my SM-G781V using Tapatalk
 

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This. Always drove me nuts because the hills by me are pretty steep (10-12⁰) and the car would be pretty aggressive in the AM with a cold motor. I always overrode by moving the shifter over before it downshifts or forcing it to upshift then back to D on flatter roads.

Does the rattle noise change with wheel speed? Or engine RPM? That would suggest something loose or broken.. or do you mean a vibration?
12 degrees is steep?

lol
 
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