[Hocrest]

I'm going to assume that you mean the ECU??

-Undo the battery.
-Remove the ecsaine trim under the steering column
-Look up underneath to the left of the column and you will see the TCU and ECU bundled together. The TCU has black plugs, the ECU has yellow
-They are held in place with 3-10mm bolts. It will take a variety of extensions, wrenches and some imagination to get them.
- Re-install, one or two of the bolts have slots rather than holes, so you can getthem started before you put the *CU's in place
-Take some advil and lie flat on a heating pad.