Growling 1st and reverse. How long do I have?

[someotherguy]

Come on man! It a Gmt-400 it'll always get Ya home! You should know that

158K mile 4L60E toast in Ponchatoula, LA...from FL on the way to Corpus Christi (500+ miles left) - Harley on the trailer, and 2 cats in a huge cage inside the truck. Tow-bar'd the rest of the way by the Dodge...

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My 140K or so mile 4L60E left my 94 Suburban broke down in Houston when I lived in TN, over Christmas

Another 4L60E left my 95 Impala SS broke down in Houston when I lived in ATL GA over July 4th

I went through three 700R4's in my white 92 ECLB, one of them quit when I was near LaGrange TX, swapped it out and made it to somewhere in LA, swapped another out, made it back to ATL, then that one smoked a couple years later once I'd moved back to Houston so at least I was "local" when that one went!!!

One thing I've come to learn, if it's a 700R4 or 4L60E...you just know, it's gonna blow

Richard

 

[98_k1500]

Knock on wood, i have never had a 700r4/4l60e let me down. I have destroyed several, 4 in 1 year in my 98 1/2 ton. It never failed to limp home where i could pull it out.

 

[someotherguy]

Mine have all pretty much been fairly dramatic sunshell failure. BANG! Then dead in the water.

Richard

 

[98_k1500]

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Planetary gears are my arch nemesis. Mine had a "BEAST" sunshell in it.

 

[SubWarrior]

Thanks for all the input. I did end up having it rebuilt and it was the planetary gears. Fortunately cost was about half of what I expected it to be. The amount of downshifting the burb did while towing home would have blown the busted 4L60e for sure.

 

[88GMCtruck]

Sunshell gear just went boom in my 2002 Sierra with a 4L60E. 92k miles we bought it brand new, always had proper and regular maintenance and never hauled or towed anything other than an empty 16' car trailer 3-4 times.

 

[someotherguy]

And some will tell you that GM began using better sunshells at some point after the GMT400 series. Not!

It's like a 100K mile fuse in the transmission. Blammo!

Richard

 

[98_k1500]

^ actually, they were improved to a more hardened sunshell in 1998, but they seem to be just as prone to the failure.

 

[someotherguy]

Breaks just the same = not improved.

Richard

 

[98_k1500]

"improved"