1999 4l60e questions

d.johnson1

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Reverse is slipping and 1-2 shift is slow to occur. I didn't get to the other gears since I didn't bring it over 20 mph. I read an earlier post from molson about checking the pressures, but I cannot find the pressure test port. Does anyone have an idea where it is? FYI boost valve replaced at 1 year and 10,000 miles ago, but I have no idea what brand, so I'm not ruling it out.

Just fired it up in the garage and heard a distinctive whine in p,r,n and then nothing in od,3,2,1. I'm guessing it went away due to RPM drop. Sounds like I'm sunk, rebuild is over my head. Bolt ons in the pan are one thing, tear apart is another.
 
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