Help! Strong idling vibration AFTER recall work on Spiral Cable.

Before The stealership "fixed" the recall, Brake rotors are starting to warp so feeling a bit of vibration when breaking. Recall was explained to me that this or any vibrations lead to this cable breaking and disabling air bags - which it did (Also made horn honk randomly!!). So I took it in today to replace the cable and it fixed the airbag light and horn issue.
Now, I pull out of the parking lot and stop at an intersection and the truck is definitely vibrating. Also does this in park but seems to go away driving. All in all this is not the truck I dropped of at 9:30am today. A quick rattling sound is happening near the alternator after a quick look.

What the F did they do to my truck?

 

Take it back

and Welcome from BC

 

Look at your RPM gauge, is it idling low (500-600rpm)? If the RPM is low that's the cause of your vibration, they disconnected the battery which cleared the memory value in the cars ECU. Drive it for a few KM's and it will return to normal

 

Drove it about 10kms, shut it off and ran another km and didn't do it when I started it again. Then after driving it, it started again at next stop. Didn't check RPM's but if they disconnected the battery long enough to reset this, how come all my radio stations were still programmed? Maybe a dumb connection to make but every other time I've disconnected the battery for more than 5 - it resets the computer.

 

Alright, got to thinking about this and it's telling maybe they didn't disconnect the battery before doing electrical work and that might have something to do with the sound from my alternator? Hmm..

 

There is a device that plugs into the cigarette lighter that allows them to unhook the battery and not lose the radio presets. It is possible they used it.

Also, I would guess that the battery was unhooked and your truck's ecu was reset. I've read about people doing work on their vehicles and having it idle rough when first started.

Either way, I agree with OZ, take it back and let them explain what they did and fix it if they messed up.