I have 1997 GMC K1500 w/5.7 engine.
For a long time I've had the shudder in OD going uphill but just last week I
began having a very hard shift from 1st to 2nd. So I changed the fluid and
filter and the problem went away for a few days, now it's back. From the
reading/searching I've been doing on the net it looks like I need to replace
the valve with one from Sonnax which requires I remove and bore out the
valve body to handle the bigger valve.
Quote from a mechanic:
The 4L60E transmission also has a problem with a hard 1-2 shift when hot,
and a 1870 code. When rebuilding the transmission, I recommend that you
always replace the valve body plate and install a Sonnax Valve Kit TCC
Regulator W/Sleeve. This is to help against having these problems in the
future. On the 4L60E make sure you always us a AC Delco hardened shell when
rebuilding the transmission.
Never having removed the valve body before, is this difficult?
Can I do this with the transmission in the truck?