So I just had to get the oil pressure (sending unit)? replaced because I had an oil leak. I went to pick it up and the battery was totally dead. They hooked it up to the charger, tried jumping it once and no, waited 40 seconds and it started right up. I get home, clicked the lock button on my keychain and the dome light came on, but the doors didn't lock. I thought maybe the batteries were dying so I opened the driver side door and hit lock, nothing worked. I then tried to put the windows down and all but the driver side went down. So it kind of works...but not really. What did laser lube do?? Is it just the main window switch? The power locks fuse is fine. I need some ideas!

 

They disconnected your battery when they changed the oil pressure sensor. ... Or the battery died while sitting...

Disconnect the battery and hook it back up, positive side last.

Common glitch, it can clear itself after some time on occaision.


Do you still have the OEM crappy azzed battery terminal connectors. Look that up while you also SEARCH your original problem, all kinds of reading material.

 

I disconnected and reconnected the battery, positive terminal last....And still the same problem. And by oem terminals I'm assuming you mean those plastic cover snap on type things ?

 

Do you need to leave it disconnected for a certain amnt of time?

 

No. Only a few minutes should be fine. There are a bunch of threads on this topic, some of them have helpful info., others are a bunch of blabber about unrelated stuff. Like this one, it can't stay on focus....
https://www.hummerforums.com/forum/h...working-14696/

Like I said, often times it will correct itself. Drive it and you might find it fine in a day or so.

The OEM Battery Terminal connectors are 100% garbage. Plan on cutting them off and replacing with a quality aftermarket set, like Stingers or your favorite brand. Those OEM connectors are known to be the #1 cause of electrical Gremlins, especially after a battery replacement or disconnect by Bozo repair techs. Once somebody over-tightens, they are done.

 

This happened to me a few weeks ago. Never did figure it out before it started working again. It took 3 days to work again. This is just a guess. There is a logic board in the master window switch that can kill the power to the locks and drivers window. I think the board gets a signal from the security system. If it's been below freezing the drivers door switch sticks and the security cuts power to the logic board because the security doesn't see the door open and close. Try unbolting the drivers door switch and bringing it indoors to warm up and dry out. Not saying it will work but worth a try. Only the drivers window and door locks use the the logic board.

 

Carefully pry up the driver door switch panel (no bolts). Disconnect all of the connections wait a few minutes and reconnect all of the connections.