automatic tranny shifting hard

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  #1  
Old 05-20-03, 12:12 PM
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Join Date: Dec 2002
Posts: 74
automatic tranny shifting hard

i have a 2000 Montana, in heavy stop in go traffic after about an hour into our drive the automatic transmision started to shift very hard, almost like you are going over a bump in the road. I pulled into a service station to check to see if i could see anything and checked the tranny fluid level which was perfectly right up. This stop lasted maybe 5 minutes, when i pulled back on the road it shifted perfectly all the way home which is another 2.5 hours. Any suggestions or recomendations??
 
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  #2  
Old 05-20-03, 01:14 PM
Joe_F
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Check alldata.com for known bulletins or problems pertaining to this model.
 
  #3  
Old 05-20-03, 04:00 PM
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Join Date: Apr 2002
Location: Pittsburgh,Pa
Posts: 2,417
You may have a pressure control solenoid valve going bad or torque regulator valve in the control valve body sticking.Trans repair other than fluid change is not DIY.You may have had a small piece of debris go through the valve body and exhaust itself into the pan.I wouldn't be concerned unless it continues.
 
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