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4l60e Transmission Longevity Good News I Hope

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jwhjr Enthusiast

jwhjr

Posted
Posted

113K on my 04 and still going strong. Filter change at 60K and fluid exchange through the cooler line at 84K.

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grayghost7 Enthusiast

grayghost7

Posted
Posted

140k with no issues other than the occasional slip off the light. Feels like a converter issue, it only happens every other month or so. As far as I know the fluid has never been changed and I've heard that if the fluid smells bad don't change it. Anyone else heard that?

KMGZ400 Senior Enthusiast

KMGZ400

Posted
Posted
i do give it a fair share of abuse. lots of heavy acceleration and braking and drifting and offroading.

 

You gotta treat 'em right bro!

I just put the first wrench to my 4.8 last month. Put a new water pump on it. But other than routine maintenance, that's it!

Easy on the gas and easy on the brakes.... They will last a LOT longer that way. Believe me!

 

 

 

i know i know. but the Suburban was babied every second of its life... never floored or driven hard or offroaded. thats why im confused.

jjg692002@yahoo.com Enthusiast

[email protected]

Posted
Posted

Bought my 07 nb cc in early 08 and 30,000 mi later lost 3rd gear,second tranny had no reverse in winter temps,and that was at 47,xxx miles later.now on the third and hopefully long lasting trans.and all i do with this truck is city and highway drive,no towing or hauling.yet!

Bob D Enthusiast

Bob D

Posted
Posted
140k...fluid has never been changed...if the fluid smells bad don't change it. Anyone else heard that?
If fluid is burnt, you should have changed it a while back.

MHO: Change it now (a couple times); you might be able to save it.

441G Enthusiast

441G

Posted
Posted

i have a nbs that i've towed with since day 1 - its got 59,000 on it and its still shifting good. i would like to get my truck tuned but i dont want to gm to use that as a out if the tranny fails.

zedbear Enthusiast

zedbear

Posted
Posted
140k with no issues other than the occasional slip off the light. Feels like a converter issue, it only happens every other month or so.

 

That what mine does. Slips and also feels like its in a higher gear for a moment.

 

Anyone know if that maxlife trans fluid actually helps with leaks? I have a very slow leak at the front seal and really don't feel like dropping the trans, lol.

Daryl LBZ Senior Enthusiast

Daryl LBZ

Posted
Posted

Dads 99 has around 165,000 miles on it, and so far it still shifts great. Who knows when the fluid and filter was changed, it was a company truck for a powder coating company, and they ran the guts out of it...

mxdirtrider56 Enthusiast

mxdirtrider56

Posted
Posted

Occasional slip starting from a stop light. Happens maybe a couple times a month. Changed the fluid and filter at 60,000 miles and 100,000 miles. 102,000 on it now. Hope to get a lot more life out of it.

dlstewart01 Senior Enthusiast

dlstewart01

Posted
Posted
Occasional slip starting from a stop light. Happens maybe a couple times a month. Changed the fluid and filter at 60,000 miles and 100,000 miles. 102,000 on it now. Hope to get a lot more life out of it.

 

 

My 05 did that when it was new. It has not done it in 5 years since I put the corvette and 4th hold billet servos in and got a tune.

mxdirtrider56 Enthusiast

mxdirtrider56

Posted
Posted
Occasional slip starting from a stop light. Happens maybe a couple times a month. Changed the fluid and filter at 60,000 miles and 100,000 miles. 102,000 on it now. Hope to get a lot more life out of it.

 

 

My 05 did that when it was new. It has not done it in 5 years since I put the corvette and 4th hold billet servos in and got a tune.

 

 

Yea other than that it shifts great, and it doesn't slip that often. A couple times a month was probably an over-exaggeration. It tows great too!

J-man67 Senior Enthusiast

J-man67

Posted
Posted

Had 89,000 miles on one in my Colorado. That truck was abused from the lot. I have 25k on this one, and no problems, but I foresee some in the near future. I ran under-geared for about 20k miles, while towing, off-roading, and not being so easy on the skinny. Time will tell, but as of now, it feels great.

grayghost7 Enthusiast

grayghost7

Posted
Posted
140k...fluid has never been changed...if the fluid smells bad don't change it. Anyone else heard that?
If fluid is burnt, you should have changed it a while back.

MHO: Change it now (a couple times); you might be able to save it.

 

It's not burned nor does it look or smell bad. I am simply asking a question of all you guys to see if anyone else has heard that.

J-man67 Senior Enthusiast

J-man67

Posted
Posted
140k...fluid has never been changed...if the fluid smells bad don't change it. Anyone else heard that?
If fluid is burnt, you should have changed it a while back.

MHO: Change it now (a couple times); you might be able to save it.

 

It's not burned nor does it look or smell bad. I am simply asking a question of all you guys to see if anyone else has heard that.

 

 

I have never heard that. What I have heard though is not to do a complete flush after 100,000 miles or so.

rodram Enthusiast

rodram

Posted
Posted

the experience with the '90s GM trucks (GMT400's) with 4L60E transmissions is that an average life of transmission is 130,000 to 140,000 miles ... beat it up and abuse it you get less... good regular maintenance and keep it from overheating then get get more...

 

mine died at 131,000 miles (210,000 kilometers) ... but I bought the truck at 126,000 miles and really have no idea about the maintenance it got from the previous two owners.... got a total rebuild with upgrade parts that should, with proper maintenance last longer than the original transmission

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