Well, I've been down for the count - but the procedure on my heart went well yesterday so I guess I'm back.

My FIRST advice would be to open the big box next to the battery and see if the modules there got wet. If they did, I'd turn the car into an insurance claim. If they are dry and show NO SIGN of water damage - I think you are good.

If the TCM is wet, (under the floor mat on passenger side - auto trans only - that will need to be dealt with as well.

THEN, I'd follow the advice on the security module in the back of the car and put in a charged battery and see what I get.

ANY connector in the car that got wet will most likely eventually corrode and leave you stranded. If the water got high enough to infiltrate any harness connectors, you are screwed even if you get the car running - UNLESS you can clean the connectors well and after 30 years of electronic troubleshooting I have little faith you can effectively do that. When radio equipment came in that got wet, it was usually ruined - if there was battery voltage available to set up the corrosion.

A product without battery voltage stood a far better chance of severe damage. Our advice was ALWAYS to tell people to yank the battery out ASAP and bring the product to us. We did, sometimes, manage to save a radio but often that radio was a problem child for life.

It sounds like the water didn't rise high enough to ruin the car to me, but I bet you have wheel speed sensors that are going to be a pain in the *** for years now. But agian, such sensors are mounted such that, possibly, the connectors are high enough or sealed enough that you are ok.

It's worth a try, but some pictures of the trunk and under the floor mats would help us help you.