Purchased 2015 Denali XL last May and had a rattle in the dash that the dealer could not fix after 8 trips lasting anywhere from 3 - 10 days per visit. I can tell you they tried almost everything possible to fix but just could not find the rattle. The good news is that the Denali was totaled in a head on collision (no injuries and not at fault) late January and I got a brand new 2015 Denali XL last month after all the insurance hassle.
The new 2015 (2nd generation) Denali does NOT have a dash rattle that was a great relief! However the new Denali, which has the new 8 speed transmission (First one had the 6 spend transmission), and has a Whine noise that sounds like a siren when in 3rd and 4th gear or when traveling 25-28 MPH when both accelerating and de-accelerating. Dealer service advisor and technician said sounds standard to them so I asked them get an new 8 speed Denali from sales to test drive. Along with the service manager, we went for a ride in the new off the lot 8 speed and all sounded normal with gear and transmission drive train noise. We then got in my Denali and the service manager agreed there was noticeable whine and told the service advisor to check my car back in. After 10 days at the dealer ( did have a loaner) , they concluded that they could not determine where the noise is coming from and said to come pickup the vehicle and continue to drive it to see if gets any worst, after all they said it has a 100,000 mile warranty. They further stated that since there appears to be no other complaints registered with GM and since they could not determine where ( rear-end, transmission, or transfer case) the noise was coming from, there was really nothing they could do and get GM to authorize a repair. It's clear to me its the transmission. The noise is only in 2 of the eight gears in the transmission and goes away when slowing down when the transmission shifts below 3rd gear.
This is just unbelievable and very frustrating when paying over $70,000 for this vehicle.
Anyone having a similar issue?
Any suggestions on what I should next?
Don
Alexandria VA
The new 2015 (2nd generation) Denali does NOT have a dash rattle that was a great relief! However the new Denali, which has the new 8 speed transmission (First one had the 6 spend transmission), and has a Whine noise that sounds like a siren when in 3rd and 4th gear or when traveling 25-28 MPH when both accelerating and de-accelerating. Dealer service advisor and technician said sounds standard to them so I asked them get an new 8 speed Denali from sales to test drive. Along with the service manager, we went for a ride in the new off the lot 8 speed and all sounded normal with gear and transmission drive train noise. We then got in my Denali and the service manager agreed there was noticeable whine and told the service advisor to check my car back in. After 10 days at the dealer ( did have a loaner) , they concluded that they could not determine where the noise is coming from and said to come pickup the vehicle and continue to drive it to see if gets any worst, after all they said it has a 100,000 mile warranty. They further stated that since there appears to be no other complaints registered with GM and since they could not determine where ( rear-end, transmission, or transfer case) the noise was coming from, there was really nothing they could do and get GM to authorize a repair. It's clear to me its the transmission. The noise is only in 2 of the eight gears in the transmission and goes away when slowing down when the transmission shifts below 3rd gear.
This is just unbelievable and very frustrating when paying over $70,000 for this vehicle.
Anyone having a similar issue?
Any suggestions on what I should next?
Don
Alexandria VA