jmac

Unfortunately I did not find any codes to clear. Anyone know if this looks normal in regards to ride height sensors?

I just replaced all four shocks on my wife's 2016 Yukon Denali XL and it is still riding like crap. The back shocks were toast and one of the front shocks had fluid leaking out. Yes ride did improve but not to what I expected. My Jeep rides better than my Denali and that just is not right.

Fixed it. Removed cleaned all the buildup and no more leak.

I have identified a large exhaust leak before the flex joint on my 2008 Sierra Denali. Does anyone know if there is a gasket as GM parts drawing does not indicate it? Also if there is not a gasket how can I repair the flange leak? I have attached pictures. Thanks

I am having rhythmic vibrations in 6th gear when applying load to my AWD 2008 Sierra Denali. The noticeable vibration starts around 60 mph and if I let off gas or place truck manually into 5th gear the vibration disappears. I do not notice it at lower speeds or in any gear besides 6th. Transmission fluid has been exchanged every 50K and was done about 25K ago. My front axles are fairly new at 1 year old and front u-joint changed few months ago. I can’t hear any sound but notice vibration through floor. I do not notice any slack in rear u-joint at all. At this point, I am either thinking transmission or exhaust. Any diagnostic ideas would be welcomed.

I corrected the groan in our Yukon by removing all the power steering fluid and replacing with a syntheric.