Driver's side by the emergency brake. The part number is important to confirm you're buying a TCU that will give you first gear start. 94-95 will also work. If you post up the part number we can be sure before you buy it, or if you've bought it - take the time to install it.
The updated TCU showed up and I installed it in a little over thirty minutes. Worked like a charm and now the car is so much more enjoyable to drive and clearly much more responsive starting off on first as all cars should. Thanks for the advice and help on here.
I have a tcu to swap for my 1990. But I haven't put it in. At this point I'm just leaving it as it is. I don't beat on it. And use manual shift if I'm going to lay into it. Im leaving my 90 museum worthy. My 95 meh.... anything goes. The 1st gear start TCU is a significant upgrade though. Especially along with a nico ecu
My advice BCC93QT is to do as I did. Install the new TCU and keep the original in case at some point you want to sell it as all original. I’ve restored my 91 to look exactly as it did when new but meantime, it’s much more enjoyable to drive with first gear start. I drive this like an old lady but it’s just overall better not having to go full throttle or run through the gated shifter to get decent acceleration.
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