Transmissiom problem 96 suburban

Transmission is not shifting into 3rd gear. It slips and when you give it some power it finally catches. I checked the fluid it's foamy and it goes a couple of inches up the dip stick.

No 3rd can be:

- 3/4 Clutch pack is toast
- 2-4 Band is not being released (Servo)
- 3-4 shift solenoid, 3-4 shift valve

and other reasons. The fact that the fluid is foamy and overfilled is not good either.

Driving it while the tranny is slipping is not a good thing. It might be a good idea to have the pan pulled and inspected.

Good luck.

//2000CAYukon

Shouldn't be over filled checked it two weeks ago fluid was fine. Haven,t added any fluid. The foamy part has me stumped.

Is it setting any codes?
What trans and mileage year and engine?
May be a good time to service trans filter and fluid.
Take a note on what is in bottom of the transmission pan?
Does the fluid level hit the full mark when hot?
Mt

Shouldn't be over filled checked it two weeks ago fluid was fine. Haven,t added any fluid. The foamy part has me stumped.

Foamy fluid can be from:

- over filled
- contaminated fluid (mixing with radiator coolant)
- fluid is very old
- fluid is getting very hot

When was the last time the fluid and filter was changed?

//2000CAYukon

What model are you running? 1500 or 2500, the 1500 came standard with a 46L60E Transmission, this transmission is notorious for it's failures when used in utility vehicles. It's actually meant for performance racing, it's used in the mid-90's Camaro's and Firebirds. If you have 2500, then you probrably have the 4L80E and that model is rock solid. Check your fluid pan, if you have a lot of metal particle goo on the bottom, you definitely need a new Transmission.

Good Luck