This is classic ignition problem--the lack of ignition strength keeps the power down and causes the bucking with the TCC locked and the engine under load (like up a hill). One of these three things is the likely culprit--1 the computer, 2. the coil packs, 3. the ignition module (well, plugs and wires too). Ignition modules can test good and be bad, as can the coil packs. Autozone parts of any kind (ignition module, coil packs, computer) are likely to be bad out of the box--avoid them. Best if you have somebody in your area you can swap known good parts with (give them back when you're done...) before just buying new parts and throwing them at the car. I've had all 3 things go bad (not at once) and NOT throw codes. Weak doesn't mean failed, so no code, but runs bad. Go with AC Delco parts. They cost more, but they work. No-name Chinese-made parts often don't work when brand new.
Last edited by KeithH; 12-27-2008 at 06:38 PM.