Bought a 2000 LC about a month ago with 138k. Timing belt had not been done so I had a mechanic (one I am not very familiar with, sadly) look it over and said truck looks good, but should do timing belt water pump ASAP. I figured that was going to be the case so told him to go ahead. Timing belt water pump was completed this past Friday. I picked it up and had to take it straight on a 180ish mile trip where I hit tons of traffic, truck drove great the entire way. Left it parked all weekend. Drove home this morning and at the end of the ride the A/T oil temp and check engine both came on and the truck clearly lost power and was driving off. I pulled over and gave it about a half hour to cool down. Was able to get home after but truck was not driving as well as usual and then while pulling into my drive way stalled. Is my transmission toast? I checked the fluid and it looked good and didn’t smell burnt but it was higher than it should have been. I am pretty much a newb here so I think my next move has to be getting it towed to the shop, should I bring it to a specialized Transmission shop or back to the shop that did the timing belt work? Dealership? Any advice is greatly appreciated and anyone who has had a transmission go out on them and can tell me their experience, thanks.