New member 1st post Chevy shake

John1shot · June 28, 2016

Purchased a new 2016 2500HD 4x4 Z71 Midnight Edition. I went on a 200 mile road trip and couldn't wait to get out of the truck. Just like the rest of the posts I have been reading my truck has the Chevy Shakes between 60 & 75 MPH and it is not constant. It comes and goes it seem to be more prevalent in windy conditions. I had it into the dealer and they said they didn't notice anything wrong and come back in at 2000 miles if I still have the Vibration or shaking. The dealer told me that the aggressive good year tires I have will make the noise i am hearing. I had to repeat my self several times to them. I am use to aggressive tires its not the noise it is the shaking/vibration at freeway speeds. I had a 2007 Avalanche and should have kept it. I was not aware of this Chevy Shake. I am running my tire pressures at 70psi on the rear and 60 psi on the fronts like the vehicle specs say to. I have also placed 400lbs of weight in the box over the axle to see if that has any effect. I will try this for a couple of days and then i will try to run my tire pressures at 65 front and back. i will re-post in a couple of days with any results. I only wish I had known about this before I bought the truck. I had a great deal on a 1 ton Ford I should have taken but I have been a Chevy truck guy since 94 and friends don't let friends drive Fords.

Daryl LBZ · June 28, 2016

Welcome! Sorry to hear about the shaking issue.

QueenGlamis · June 28, 2016

I bought a 2016 2500HD Gas truck after having a 2014 1500, loved the 1500 by the way!. The steering was so sloppy on the 2500HD gas truck and wandered so bad that I refused to drive it after week 3. COURTESY CHEVROLET is a terrible dealer for anything post-game FYI. Dealer had the truck 4x in 3 weeks. Their genius fix after 4 times plus 2 other non service visits and hours of conversations in email, phone and texts - too much air in the tires. Wow! It was never right and I just couldn't stand to pay for something I didn't feel safe driving.

Traded it back in - ate some big bucks, and got a 2016 2500HD duramax cc LTZ, my dream truck. ZERO steering issues, wheel was tight and felt as good as my 2014 half ton. Until the 2nd week I had it and the power steering box started leaking terribly- as in puddle on the driveway. Took it to different dealer -Thorobred Chevrolet- as the 1st on was horrible- and they had it for a few days.

Thy put me in a compact car loaner and said they couldn't get the part, GM had zero in Stock nationally, and they guessed it was being manufacturered but no ETA. They sealed the leak and gave me the truck back until the part come back in.

So I leave the dealer, guess what? The steering is sloppy. About 2-3 inches I can move the wheel left or right before it is responsive. It wanders and constantly has to be corrected. I move the wheel from 12 to 3 o'clock- the angle indicated on the DIC shows 1degree.

Everyone says "it's impossible" because it's a mechanical system. Until they drive it and they go "oh my I see what you are saying".

Meanwhile I have a 60,000 truck that I worry about driving to work or towing to go camping this weekend while I wait for a power steering box from GM that has no ETA.

VERY frustrating.