torque converter is cycling lock/unlock
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I have a 2005 SS with 4L60E and AWD with 410 gear ratio. it just started slipping out of OD after about 15 miles from my house on the way to work driving down I-45. RPM around 2200 at 75 MPH then all of a sudden the RPM will go up to 2500 at same speed. I let off the gas and let it slow down to 60 MPH hoping it will lock back up but it won't. Also if I accelerate just a little, the RPM will increase about 500, like a stall converter. The TC will not lock back up unless I come to a complete stop and take off again. It shifts normally getting up to speed until I get above 70 MPH. Has anyone experienced this problem? I hope it is a simple fix.
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KyleW707
GM Parts Classifieds
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07-29-2015 09:17 AM