I seem to have "lost" my reverse gear. It acts like it's in neutral.
Forward gears seem ok but1st seems to shift a bit late. Vehicle has
about 120,000 miles on it. Fluid level is fine.

<drriss (AT) gmail (DOT) com> wrote

Likely the tranny needs a rebuild. Did it fail over time or simply fail
immediately? I can't remember which solenoid reverse is on, but a sudden
failure would more likely point to a solenoid. Gradual failure to the point
of no reverse is likely clutches. That would be a rebuild.

--

-Mike-
mmarlowREMOVE (AT) alltel (DOT) net

Reverse is not on any solenoid in Hydramatic transmissions. One forward and
reverse are always obtained hydraulically. 4L65E, the lighter trans, uses 2
clutches for reverse (reverse input and low/reverse), 4L80E uses 1 clutch
(2nd) and 1 band (reverse).

Butter it, it's toast.

"Mike Marlow" <mmarlow (AT) alltel (DOT) net> wrote

"Kevin" <ksmabon (AT) mts (DOT) net> wrote

Guess that explains why I could not remember which solenoid it was on.
Automatics are almost a black box for me - not completely so, but I never
claim any detailed famiarity of them. This is the one area of my vehicles
where I turn to a friend who does nothing all day long but work on trannys,
and let him be the hero, anytime I have a tranny problem.


--

-Mike-
mmarlowREMOVE (AT) alltel (DOT) net

You could pull the codes and see what the computer thinks is failing.

"Mike Marlow" <mmarlow (AT) alltel (DOT) net> wrote

The computer will have no idea that reverse is gone, it doesn't care. The
trans has to come out. There's either a massive fluid loss, like a cut lip
seal or cracked piston, or burnt clutches. There's nothing you can do with
the trans in the vehicle.


"Woody" <TheDuck (AT) pond (DOT) net> wrote

On Mar 21, 12:07 pm, "Kevin" <ksma... (AT) mts (DOT) net> wrote:
Thanks for all the replies. I took it in today and yup ,it's toast.