Question about 2003 GMC Yukon Denali

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I have a 2002 Danali XL. I am having a transmission issue. When I am using revers, then switch to drive, I am hearing a rather large 'clunk' in the trany. If I don't let it completely catch into drive it makes the noise. I don't think it's the transmission. Once I'm driving the tranny doesn't slip at all. A friend at work said that the drive shaft 'floats' into the transmission and that it probably needs to be pulled out and lubed. Does anyone have feedback? The floating idea actually seems to make sense to me...

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That clunking could be the result of a worn transmission mount or work u-joints in your driveshaft. The vehicle will have to be hoisted on a lift and inspected, while someone shifts it from reverse to drive, to pinpoint the noise.

Posted on Sep 29, 2010


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