Auto transmission slips then grabs

have you told any of the tranny places of problem when they were replacing or working on vehicle ---has the tcm been tested ---and scan for any trouble codes

Hi Scott, The link below is a youtube video showing how to fix your transmition, I hope this helps......CHEERS''

Auto Transmission Problem
https://www.youtube.com/watch?v=WjNbeInU6-4

Fixing Transmission That Slips And Clunks

transmission slipping could be torque converter. or tranny fluid. possibly gear teeth in tranny are ground down in one spot.

I had a similar problem thinking my tranny was slipping. Turned out it was the spark plugs miss firing, had 100,000 mi. Changed the plugs & wires problem went away.

You should not use overdrive unless you are steadily going highway speeds. I had one of those and my ex liked to use cruise control on windy coastal roads. This caused it to shift back and forth from 3rd to overdrive constantly. So I disconnected the cruise control so he couldn't use it. Lol. I'm not suggesting this for you. You should keep overdrive off for now and have your transmission serviced. New filter & oil & flush the cooler. Make sure you ONLY USE THE RECOMMENDED FLUIDS!!!!!!!!!! See if that helps. Do not use overdrive pulling a trailer and going up a hill and do not use it if you are on windy roads where you are slowing down alot of times. Try letting off the gas for a second when you do want to engage the overdrive. Remember to always check your automatic tranny fluid with the engine running and fully warmed up.

I’m happy to assist further over the phone at https://www.6ya.com/expert/kim_3202917d7c587455

You can have the clutch and the pressure plate checked. If it is an automatic tranny you may try to drain the fluid and have it replaced or have the solenoid cleaned out or checked. The solenoid controls the hydraulic pressure to the clutch

your overdrive clutch hub has gone out/worn out.
It can be replaced or you could have the whole transmission re-built or replaced with a low mileage one from the salvage yard , etc at a lower cost..(which is what I did)
This is common on these trannys.

Either the cruise control is going out or the torque converter clutch circuit is going out on the trannys overdrive. Do you have check engine light codes? If so you will need to have a computer hooked up to read them. Darrel coleman also has a problem with his car like this and I have suggested the same thing to him

Sounds like the transmission is starting to fail. If you get the jerky response when making a sharp left or right turn upon acceleration that is a sign that the clutch packs inside the auto tranny are slipping and grabbing intermittently. If the truck has pulled a trailer a lot in it's earlier days you can almost bet the tranny is the problem. Smell the tranny fluid to see if it smells burned. The burnt smell indicates slipping and excess heat.

Your transmission fluid contain water,thats why the colour of the fluid changed to pink.And of such the clutch is slipping causing the engine to reve up before shifting - Check transmission cooler.