Hello,
Can anyone out there pinpoint the location of the TCM (Tansmission Control Module) on my 1999 Saturn Station wagon SW2 /1.9.
I cannot seem to spot it. Perhaps I need to remove dashboard to access it.
I am attempting to clear a P0702 Diagnostic trouble code.
A helpful member here advised me to inspect the TCM, clean, plug and unplug the wire harness multiple times to clear corrosion.

Sincerely,
Jim S.

 

The TCM is part of the powertrain control module, or PCM which is located under the upper instrument panel trim cover(top panel on dash) right of center. On the ION it's a seperate item located in front of the fuse box under the hood.

 

While plugging and unplugging connectors is a classic method of clearing corrosion, the probability of corrosion taking place is with components exposed to the weather. The best place to deal with things like that is to locate plugs that go into the transmission itself and plug and unplug them. Buy a tube of goo that is used to grease electrical connections. I keep some in my parts bins all the time. It is sold I think to grease things like ignition plugs. I'd have to go down stairs into the garage to look up the exact name.
something like this;
http://www.sanchem.com/aSpecialE.html
or
http://www.amazon.com/Permatex-22058.../dp/B000AL8VD2

the second of which I keep around. Available in auto parts stores.

 

Good idea Unc.

 

dieletric grease i believe. It may be in one of your links but I'm too lazy to click through