Hey Gang.....Calling All DN 4+3 Gurus
I just bought my 1st Corvette, a '86 Coupe L98 w/ the DN 4+3. The price was right and as a ancient auto tech/instructor it's going to be a DD-ish car. I bought it to DRIVE and enjoy.


Now back to my question(s).


The system does not shift into overdrive. The light in the message center comes on but clutching makes no RPM difference. However, when the O/D light is on, backing off the throttle for decal causes the car to freewheel. Clicking the button cancels O/D and the car decels normally. The car also backs up normally. I'm running right at 3k RPM @ 70mph.


I've had the car 2wks and I'm getting ready to service it. I've ordered/received the O/D filter kit and my shop manual CD has come in.


What do I need to look for as I change the fluid/filter? What failures seem to be the most common?




Thanks in advance for the information.
Jonathan.....