4l60e Transmission Longevity Good News I Hope

[jro909]

the biggest connection i can make to the 4l60 and how long is life is would be maintance...the secondary connection being how it was treated, i asked out of curiosity at the dealer how many of these trans they replace or have replaced and it sounded like it was a rare occurance....but seal failure i guess is common

[mdauwald]

I got 120K out of a 91 700R4. Would have easliy gotten more but the pump started to leak and since replacing the pump required removal I decided to rebuild it anyway. Too bad it thru a rod 2k miles later

[cghbuilder86]

I think my '94 Silverado 1500 would have the 4l60e. But I'm not 100%. Not to smart on transmissions yet. Anyways, 189,000 miles on it. Fresh fluid and filter every 50 thousand. Other than that never been touched.

[kawtoy_77]

75,000 MILES, on the '07 STill pushing, pulling, and hauling.....

[Bob D]

I must admit I'm a little surprised at the number of early failures posted here.

I've owned 1 GM vehicle with a 4 speed Jetaway,

2 with TH350,

4 with TH400,

current Silv with 4L60E.

I've never experienced a tranny failure.

[grayghost7]

I must admit I'm a little surprised at the number of early failures posted here.

I've owned 1 GM vehicle with a 4 speed Jetaway,

2 with TH350,

4 with TH400,

current Silv with 4L60E.

I've never experienced a tranny failure.

I hope you knocked on wood as you typed!

 

What's a Jetaway?

[ken1mod]

To the guys that have a bit of slip on starting out, to me, this is low pump pressure , maybe a dirty filter. I would consider this to be a warning that something relatively simple needs to be fixed. Maybe a modulator solenoid.

 

How much clutch slippage is OK, ZERO.

 

Ken

[dlstewart01]

To the guys that have a bit of slip on starting out, to me, this is low pump pressure , maybe a dirty filter. I would consider this to be a warning that something relatively simple needs to be fixed. Maybe a modulator solenoid.

 

How much clutch slippage is OK, ZERO.

 

Ken

 

No this is somrthing they would do when new. And some times they would not shift to 1st and start out in 2nd. usually a flash at the dealer would cure it. My 05 did this a few times when brand new but I didn't leave the trans stock for very long. It hasn't done it since then.

[Bob D]

What's a Jetaway?

My age showing. Had one in my '62 Caddy.

Jetaway aka: Controlled Coupling Hydramatic (or dual-coupling Hydramatic).

[dlstewart01]

Yeah in the 50s we had a Dynaflow, a couple of powerglides and a Turboglide..

[Bob D]

 

 

...we had...a couple of powerglides...

Ah, yes, the "slip-n-slide" powerglides. Remember them well.

[dlstewart01]

...we had...a couple of powerglides...

Ah, yes, the "slip-n-slide" powerglides. Remember them well.

 

 

The 2 speed automatics. I broke one in dads 53 Chevy belair and one in my 56 chevy convertable.

[desrtrat]

03 4L65E with 53,000

shift kit, servo, tune. flushed @ 25,000 will flush/filter in next 3 mo. a big issue is that most people will not come to a complete stop when changing gears, R-D D-R not good..also beware of people who think they can tune. to much line pressure, and trans shift settings not set properly. been horror story's of trans not lasting 100 mi.

 

IMO- the best things are a shift kit, Vette servo, and a GOOD tune, and regular service..

[dlstewart01]

03 4L65E with 53,000

shift kit, servo, tune. flushed @ 25,000 will flush/filter in next 3 mo. a big issue is that most people will not come to a complete stop when changing gears, R-D D-R not good..also beware of people who think they can tune. to much line pressure, and trans shift settings not set properly. been horror story's of trans not lasting 100 mi.

 

IMO- the best things are a shift kit, Vette servo, and a GOOD tune, and regular service..

 

 

Yeah, I started doing the shift-kits in the 70s. Lately I just do the servos and a tune.

[Murder n Mayhem]

My stock 2003 5.3 Tahoe's 4160e tranny lasted me until 80k miles.

 

Replacement is going on 150k & still perfectly smooth as silk.