4L60E - brief RPM raise on 2-3 upshift (hot tranny)
07-11-2017, 07:52 AM
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4L60E - brief RPM raise on 2-3 upshift (hot tranny)
Hi folks, bit of greenhorn here. I have 2001 Chevy Tahoe with 4L60E tranny. The car has only about 160k miles as for now, everything stock. Last year I installed TransGo Shift-Kit 4L60E-HD2 - actually only the parts that make the shifts firmer and quicker, no shims for the hard-shifts, no clutch springs. The valve body looked in good shape, only the separator plate was showing a slight wear on check-ball areas but nothing serious. The truck went perfect after.
However during last week I noticed that when the transmission is hot after longer drive, there's a brief RPM increase during 2-3 upshift. It's about tenths of RPM. The shift speed seems the same like it was in the past. This usually happens when applying a moderate throttle for acceleration. The fluid still looks and smells brand new. There are no codes.
However during last week I noticed that when the transmission is hot after longer drive, there's a brief RPM increase during 2-3 upshift. It's about tenths of RPM. The shift speed seems the same like it was in the past. This usually happens when applying a moderate throttle for acceleration. The fluid still looks and smells brand new. There are no codes.
- Could it be valve-body problem?
- Is it essential to have the ECU tuned when installing this kit?
