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My transmission is shuddering when shifting

Tiny
RUSTY_GRIT
  • MEMBER
  • 2005 GMC YUKON
  • V8
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
I have a 2005 Yukon XL SLE with 80000 miles. 5.3 L V-8. I am experiencing a shudder anywhere between 45-60 MPH. This happens when I am getting at my cruising speed and seems like it is trying to shift into OD but feels like it is going in/out of OD. Transmission was repaired but still having same issue. Additionally, we checked all wheels for proper balance and warping. What can possibly be causing this issue?
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Saturday, January 1st, 2011 AT 9:33 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Is the transmission actually going into OD? What was done to "repair" it?
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Saturday, January 1st, 2011 AT 11:52 PM
Tiny
RUSTY_GRIT
  • MEMBER
  • 3 POSTS
The transmission does shift into OD after I push through 60. If I stay in the 50-55 mph range, it shudders and shifts in and out of OD. If I accelerate to 65+, of go down to 45 or below it stops. Additionally, it happens when going uphill more often than when traveling on flat terrain. Transmission was serviced (oil and filter) and replaced u-joints.
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Sunday, January 2nd, 2011 AT 12:09 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
To me it sounds like a bad TCC solenoids that locks the converter up for overdrive. That is where I would start. Also, you mentioned you had it in or repair. What was done to it?
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Sunday, January 2nd, 2011 AT 12:18 AM
Tiny
RUSTY_GRIT
  • MEMBER
  • 3 POSTS
Transmission was serviced (oil and filter) and replaced u-joints on drive shaft. No other repairs to transmission.
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Sunday, January 2nd, 2011 AT 12:27 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Other than a service, nothing was done to the trans. Based on what you have discussed with me, I would recommend having the TCC checked.
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Sunday, January 2nd, 2011 AT 10:58 PM

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