That's what I was afraid of. They already had to rebuild it a second time 3 days after I got it back the first time because the 2nd and 4th gears failed.

 

Did you ask for your old parts? I doubt anybody really rebuilds 4T45E transmissions.

 

Most likely the solenoids failed , very common problem, but transmission shops think it’s rocket science, I always recommend replacing all of them, if you have the transmission side cover off

 

Thanks for the suggestions guys. The problem hasn't resurfaced, but if it does again, I'm gonna take it back to Aamco. I just have one more question: I've seen posts on here about an ECM update. Is there any dealership around the Los Angeles/Ventura area here in California that knows how to do it? I've called the dealership near my home in Thousand Oaks twice and they've said they would get back to me both times, but never did.

 

There has to be 50 GM dealers within 20 miles. It is actually a TCM reset, I don't remember the particular setting.

Basically the computer learn how the driver drives, over time it over learns.

 

TCM reflash should show if it was done , a good transmission shop can do it! My dealership here doesn’t have anybody who remembers how to use the now obsolete Scan II tool

 

Hi guys, back again. So I haven't had any more problems with the transmission the last few days. I've driven it a good 150 miles and it's been good. Now today, I notice what I THINK is an oil leak under my car. Also, I'm not sure if this burnt out wire above my starter is dangerous or not, or if it's an easy change. I'll provide pictures, any help is greatly appreciated and will hopefully save money. I'm not ready to give up on this car just yet!

The spots on my driveway. Directly under the engine.

Burnt out wire above my starter I believe

Flashlight is pointed where I believe the oil to be coming from

 

Oil drip looks like
A : oil drippings during filter change
B : oil pressure sensor leaking
C : oil filler neck leaking at the valve cover

the burnt wire could be oil pressure sensor

 

Well that's a relief. I just looked up the oil pressure sensor and it's a relatively cheap fix. Thank you.

 

I don't see a burnt wire. Just wires with oil and crude built up on them.