Not in owner's manual

there is a multi control module panel mounted under the rear seat they are located on the passenger side their are four or five module units mounted on the panel

I would open with a visit to a transmission shop. on a car that old you are looking at a rebuild which may well cost more than the car is worth. things, just like people, wear out and break down with age and use. after the transmission is rebuilt you are going to need an engine diagnostic to find out what is making the service engine light stay on. In the olden days cars just broke down with no warning, the silly thought behind the warning lights was that folks would get the cars seen to if they had advance warning of a coming failure. however the sad truth is that the lights just stay on warning of failure until the failure ad then the owner wonders why.

It depends what all went out.

check the flasher underneath the dash.

Check your owner manual. All of the specifications are listed in the back of it.

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Try this link. It says they have one. Good luck

Sounds like the ABS warning light.

A quick trip to the dealer would confirm but it sounds like your I.A.C. (idle air control motor) may be broken. I don't remember it being too expensive when I replaced it on my 95 caddy de ville. Also check out these symptoms-
Is your car idling properly?
Does it get rough under load or other conditions?
Any idle or off idle irregularities at all?
If so these symptoms may be linked to the I.A.C.
-Dynami

it is normailly the big round thing in the fuse panel on the driver side under the dash by where your feet go