Transmission Fluid Change On A 2001 Isuzu Rodeo
(click on images to enlarge)
I spent quite a bit of time searching the internet trying to get
instructions how to check and change transmission fluid in
a 2001 Isuzu Rodeo, but all I could find was the same
information copied and pasted from site to site, and no
photos. So I worked my situation out and took a couple of
photos to help others be sure of what they’re taking on
when they do the same work.

These photos are taken from under the passenger side of
the truck, with the truck sitting on the ground. I did not have
to raise it to get the job done. The vehicle has factory
suspension.

As you probably know by now, there is no dipstick under
the hood, nor is there a way to add fluid easily. At the rear
of the pan, underneath, there is a bolt you remove to drain
the fluid. Approximately six inches from that bolt, there is
another bolt. It is about 3 - 4.5 inches higher than  the drain
plug, as the design of the pan is such that one corner (that
corner) is formed to sit higher in the pan (photo).

The way to check the fluid is to remove the plug (upper
bolt) and if fluid drains out--you’re good. This is terrible
planning, because if it’s low, you can’t tell how low. But it is
how it works. So, you pump some fluid in until it leaks out
that same hole. When the fluid starts to run out of that same
hole, you’re good. To replace the fluid, you drain it first (out
of the other, lower plug) then replace the drain plug and fill
it until it leaks from the upper.

Another problem with this process is, you have to pump the
fluid upwardly--from beneath the vehicle against gravity--to
get the fluid in. To accomplish this, you need a pump. I got
an adequate pump at my nearest auto parts store for $2.99.
Off one end of the simple hand pump runs about four feet of
clear hose, similar to what you might use for a home
aquarium. Affixed to the other end of the hand pump is a
nipple/plastic fixture that fits into the fill hole on the pan.
You have to put the end of the long hose into the quart
bottle of fluid and physically pump it into the pan. It helps if
you use the extra footage of the hose to elevate the fluid
bottle. That way gravity helps, considerably, feeding the
fluid from the bottle to the pump. I put in one bottle of fluid,
checked the level, and then started the next bottle. From
there on I checked the level each half-bottle I added. It took
me exactly three quarts. I have a six-cylinder motor and I
think it takes about nine quarts to completely refill the entire
thing, like a professional shop would do. But the simple
process (drain and fill) I describe here required exactly
three quarts.

I hope this helps you. You CAN do it. If you have questions I
will try to answer. I am not an auto mechanic--just a guy
who has a 2001 Isuzu Rodeo.

Good luck.

wannabe.mechanic @ effective-defense.com
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