Vs V8 Auto - Lost 4th Gear

[Macca177]

Hi Team,

Well cruisng along on the highway, all of a sudden just wouldn't go into 4th. No matter what way I tried. 1st, 2nd, 3rd working perfect. I pulled over as soon as I could safely on Highway...but whilist in 4th it felt like it slipped a little/no drive then grabbed drive but stayed in 3rd.
I've had the car about 300,000kms/20years and its never missed a beat, I do the tranismission oimyslef - castrol or penrite.
It is the 4L60E with the deep pan.

I dropped the pan after a tow home, kinda hoped the filter may of just slipped off, but It hadn't. Nothing visual I can see - but the oil is discoloured but not burnt, so its due. Did a new filter and fluid - all seems okay, can they really be senesitive like that?
Even the gregorys manual says oil/filter change and if continues, take to a specialist.

See what it does over the next few drives, or is it time to just rebuild it anyway?

 

[BlackVXGTS]

A couple of possibilities for you to consider if the problem reappears (from "4L60e Common Problems"):

6. No 3rd or 4th gear: “3-4” clutches are worn out. R&R. The car is safe to drive (in 2) until you can get it fixed.
9. No 2nd or 4th gear. 2-4 band is slipping. Servo seals may be damaged (can be fixed without removing trans. Otherwise, 2-4 band is worn out. R&R.

R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced.

 

[Macca177]

I figured thats the case, thanks for confiriming.