2013 Yukon Denali Hybrid, 185K miles. Completely stock; no changes and well-maintained.
Recently I have noticed a change in my Yukon that I cannot decipher; and because I depend upon this car for frequent long trips, I hate to wait for failure to figure out what is wrong.
Unfortunately, the dealer and an independent mechanic have been making suggestions that to date have cost me several thousand dollars with no resolution of the problem.
To me the problem feels like a drive-train problem with the limited slip differential, but I could be wrong.
Background info: The problem is only noticeable when I first start out in the morning, and is never felt throughout the day, which is baffling to me.
I back into my paved driveway, which is inclined uphill to the street. Because the cul-de-sac is on an incline, with my driveway on a downslope, there is an 2-inch lip at the street edge of the driveway so water won't drain from the cul-de-sac into my driveway and home.
When I pull out of my driveway in the morning, and immediately turn Right in the cul-de-sac, at the point I turn right I experience what seems like a moment of slip in one wheel (guessing the passenger rear wheel) before the wheels lock up and drive normal. Obviously one wheel is turning less than the others, but this "slip" was never before noticeable.
At the end of the cul-de-sac there is a stop sign, and when I accelerate from the stop while turning Left, I again feel a moment of slip. After this second turn, it does not repeat even if I try to get it to repeat.
The sensation is also similar to a miss in the engine, and I began to wonder if this was the problem, but I just don't feel it is.
The dealer serviced the transmission, and no change. Then he serviced the rear differential and noted no problems, and no change. Then he told me it was my engine mount, which surprised me, but knowing how hard the engine lurches when switching from electric to gas while in traffic, I went along. I had an independent guy put in the drivers' front engine mount, and was told then the passenger front engine mount was also bad and needed to be replaced. Both mounts are now new, and the problem remains.
About three months ago I had my first brake job on the Hybrid (I am original owner and got 176K miles on the original brakes). This week a new caliper on the driver's rear wheel that was part of the brake job failed, and leaked brake fluid. I was thinking maybe this defective caliper was causing my "slip" feeling, like maybe the brake was sticking on one wheel in the mornings. Had the dealer replace this under warranty, and this repair fixed the brake problem, but not the "slip" as it still remains.
So what would you suggest might be the problem, and how could I check to verify the problem? All suggestions are welcome!
Recently I have noticed a change in my Yukon that I cannot decipher; and because I depend upon this car for frequent long trips, I hate to wait for failure to figure out what is wrong.
Unfortunately, the dealer and an independent mechanic have been making suggestions that to date have cost me several thousand dollars with no resolution of the problem.
To me the problem feels like a drive-train problem with the limited slip differential, but I could be wrong.
Background info: The problem is only noticeable when I first start out in the morning, and is never felt throughout the day, which is baffling to me.
I back into my paved driveway, which is inclined uphill to the street. Because the cul-de-sac is on an incline, with my driveway on a downslope, there is an 2-inch lip at the street edge of the driveway so water won't drain from the cul-de-sac into my driveway and home.
When I pull out of my driveway in the morning, and immediately turn Right in the cul-de-sac, at the point I turn right I experience what seems like a moment of slip in one wheel (guessing the passenger rear wheel) before the wheels lock up and drive normal. Obviously one wheel is turning less than the others, but this "slip" was never before noticeable.
At the end of the cul-de-sac there is a stop sign, and when I accelerate from the stop while turning Left, I again feel a moment of slip. After this second turn, it does not repeat even if I try to get it to repeat.
The sensation is also similar to a miss in the engine, and I began to wonder if this was the problem, but I just don't feel it is.
The dealer serviced the transmission, and no change. Then he serviced the rear differential and noted no problems, and no change. Then he told me it was my engine mount, which surprised me, but knowing how hard the engine lurches when switching from electric to gas while in traffic, I went along. I had an independent guy put in the drivers' front engine mount, and was told then the passenger front engine mount was also bad and needed to be replaced. Both mounts are now new, and the problem remains.
About three months ago I had my first brake job on the Hybrid (I am original owner and got 176K miles on the original brakes). This week a new caliper on the driver's rear wheel that was part of the brake job failed, and leaked brake fluid. I was thinking maybe this defective caliper was causing my "slip" feeling, like maybe the brake was sticking on one wheel in the mornings. Had the dealer replace this under warranty, and this repair fixed the brake problem, but not the "slip" as it still remains.
So what would you suggest might be the problem, and how could I check to verify the problem? All suggestions are welcome!
