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4L60E TCC downshift toogle when cold only

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Old Nov 3, 2010 | 06:56 AM
  #1  
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Default 4L60E TCC downshift toogle when cold only

4L60E TCC Slipping or downshift when cold only
I have a 4L60E transmission in a 1997 Blazer whichs has following symptoms.
It has 110k mls on the clock.

The torque converter slippes or downshift when transmission is cold between 1500rpm and 1900rpm at 40 to 50mls.
Than when I start the truck after parking for couple hours it takes a while until the gear goes in. No torque applies.

I have no failure codes stored.

What do you think!

BR Bob
 
Old Nov 29, 2010 | 10:13 AM
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If you have figured this please let me know. Mine is doing the same thing and a trans guy told me a valve body update should fix it. Thanks
 
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