Get Your Transmission Flushed Every 30,000 Miles!!

[2string]

I bought this truck with 77,000 on it and have no idea if the fluid has ever been change. I want to change it but don't know which method to use. Is 77,000 considered high mileage. The fluid looks and smell good.Should I drop the pan or have the dealer pump it out or do both.

[wafrederick]

Do the line flush instead of the machine if you want to flush and change the fluid & filter too.

[MT-2500]

No 77K is not real high mileage.
If yoiu are not sure what to do get some good repair information like All data or a factory repair manual.
They have the mantiance sceduals and procedures in them.

Regular service for the transmission is usually pan drop and filter around 50K.

Yours may or may have not been done.
If you can check with the dealer that sold the truck new.
He may have mantiance and warrant records on it.

If mantiance is not known than a pan drop and filter change is the best way to go on it.

Only problem is dexron 111 is not made any more and may be hard to find.
Do not use the multi purpose stuff.

Gm say says to go to dexron 4.
But I am from the old school if it has had dexron 111 used in it I like to stay with it.
If you can not find dexron 111 Carquest and some other parts places still have mercon/dexron the stuff dexron 111 replaced.

['97ventureowner]

Originally Posted by rjeffery

Why do we keep digging up old threads?

Good question. It's usually done by "newbies" unfamiliar with the guidelines.

Originally Posted by xjcamaro89

Old threads get dug up because when someone asked a question, people always say "try a search" So they try a search and come up with these old threads and have question to go along with them, i think its a good idea to revisit old threads if someone has some new info on an old topic.

It's a good idea to revisit old threads, HOWEVER it is not a good idea to resurrect them. If you have new info to add , our Community Guidelines ask that you start a NEW thread and link to the old one if necessary.
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