1984 Chevy 1500 Transmission help.

I have a 1984 Chevy 4WD, 1500. Auto transmission.
I've never had any problems with the truck except for normal
maintenance.

When I pulled from the house today the transmission when it started to
shift felt like it was slipping.
After about 4 miles when going up a hill I heard a 'pop' underneath
and then lost power.

It had no forward but I could go in reverse.

I looked at the linkage and all appears to be working alright.

That's when I noticed a leakage coming from the left side of the bell
housing.

A check of the fluid indicated that it was low and I put more fluid in
(level ground).

It still would not engage in forward..it would engage in reverse.

Question:
Does anybody know the type of transmission that is used on this truck
in case I have to get another one?

Is there anything else I can do to check it out except for dropping
the pan on the trannie?
(I know it's an old truck but I've had it a long time and I like it
and take care of it.)

Thanks for any input or advice.

Josh

On Jan 18, 12:21 pm, josuha1954 <josuha19382... RemoveThis @yahoo.com> wrote:
> I have a 1984 Chevy 4WD, 1500. Auto transmission.
> I've never had any problems with the truck except for normal
> maintenance.
>
> When I pulled from the house today the transmission when it started to
> shift felt like it was slipping.
> After about 4 miles when going up a hill I heard a 'pop' underneath
> and then lost power.
>
> It had no forward but I could go in reverse.
>
> I looked at the linkage and all appears to be working alright.
>
> That's when I noticed a leakage coming from the left side of the bell
> housing.
>
> A check of the fluid indicated that it was low and I put more fluid in
> (level ground).
>
> It still would not engage in forward..it would engage in reverse.
>
> Question:
> Does anybody know the type of transmission that is used on this truck
> in case I have to get another one?
>
> Is there anything else I can do to check it out except for dropping
> the pan on the trannie?
> (I know it's an old truck but I've had it a long time and I like it
> and take care of it.)
>
> Thanks for any input or advice.
>
> Josh

'84 should be a 700R4 transmission, later to be known as the 4L60. It
is safe to say that you need internal repairs, or a replacement trans.
Dropping the pan would just confirm this, the damage is most likely
done.