I just bought a 2018 traverse and I'm wondering why the auto stop/start feature only works part of the time? It might auto stop at one light, then not at the next. Is something wrong?

Is your check engine light on? Check engine light will disable the remote start feature.

Question edited in English 'window'

for every vehicle with power windows ever made?

All question must have 'year make model' as the first three words.

Then I can google
year make model fuse box diagram
and I get this

Chevrolet Traverse (2009-2017) fuses and relays

https://fuse-box.info > chevrolet > chevrolet-traverse-20...
Fuse box diagram (2010-2012, Fuse side) - Fuse box location. It is located underneath the instrument panel, on the passenger side, under the cover.

2009 Chevrolet Traverse Fuse Box Diagrams - Rick's Free ...

https://ricksfreeautorepairadvice.com > ... > Chevrolet
Nov 16, 2018 - 2009 Chevrolet Traverse Fuse Box Diagrams for Underhood and Instrument Panel Fuse Box. The 2009 Chevrolet Traverse has two instrument panel ..

For any specific issues, put and answer up above to Jeff. He is our Pro Technician and a specialist in vehicle electronics.

You need a good auto-electrician with a pro grade scan tool computer to read the ECM you have. It is possible that features can be turned on. Really though this is a job for the dealership with their factory software,

if while driving possible hub failing --if while idling or stopped possible fan or pulley

https://www.youtube.com/watch?v=WlnJdc0KiLs

Here is a video to help you.

Yes but it would be horribly expensive

I would lean to timing chain. they wear out. there is a recommended change in you owners book or look on web. the place you bought it does not want to repair.s. Most used cars are as is unless there is a written warranty.. Some states have state law requiring warranties in used cars. Check to see if you can return the car and tell them you changed your mind. hang in there. The longer they put you off the better their position is. You can file a small claims case if you feel that you are in the right.

OK. you had the battery disconnected. Here is what you do. Turn on the key. The security light will begin to flash. Wait (about 10 minutes) with the key in the ON position. The security light will stop flashing. TURN OFF the key. Then, turn on the key and start the car. Security system is supposed to prevent theft for a 10 minute delay. This usually discourages any thief. This will work, You just need to be patient with the 10 minutes. It seems like an hour when you wait ten minutes for that security light to stop flashing.

Try calibrating first,window up & hold switch for 3-4 seconds window down hold 3-4 seconds then back up & hold 3-4 seconds,check for the auto down to work if not then most likely the master switch is needed.