GMC 1500 Sierra Brake Problem!!!

I have a 1996 GMC 1500 Sierra pickup, 2 wheel drive and I recently had the roters turned and pads replaced.
My problem is that I have a squeeking problem with the brakes now. The brakes work but there is a lot of squeeking when the car is hot or been running for a few minutes. Does anyone know how I can remedy this situation?
I called my mechanic, he told me he could put dealer pads ($100) on the car and it might make a difference, as he put a generic brand on them when he turned the roters.
Does anyone know how I can fix this problem? The sqeeking is loud and annoying and was never there before I fixed the brakes.
Do I need to lube the brakes?
Thanks for any thoughts and help.

Usually this is caused by pads without the noise suppression plate on them or improperly refinished rotors, the squeak is caused by a high frequency vibration between the pads and the rotor, so rotor finish and proper seating of the pads is critical.

Would it be wise to get them replaced with dealer pads?

Again, remember its the contact and material of the pads and rotors, it's possible the rotors are not finished properly or the pads don't have the insulator shims on them, talk to you shop this is not normal.

Sounds like the pads aren't releasing. Check your caliper slides because if they aren't sliding it will cause pulling to one side and the pads to drag.

I have a 1996 GMC 1500 Sierra pickup, 2 wheel drive and I recently had the roters turned and pads replaced.
My problem is that I have a squeeking problem with the brakes now. The brakes work but there is a lot of squeeking when the car is hot or been running for a few minutes. Does anyone know how I can remedy this situation?
I called my mechanic, he told me he could put dealer pads ($100) on the car and it might make a difference, as he put a generic brand on them when he turned the roters.
Does anyone know how I can fix this problem? The sqeeking is loud and annoying and was never there before I fixed the brakes.
Do I need to lube the brakes?
Thanks for any thoughts and help.

I spent months trying to fix my squeaky brakes. New rotors and
pads fixed my prob. even though it all looked good. There was
alot of rust on everything and the rust extended past the bottom
edge of the pad & was scraping the hub part of the rotor.
common advice from folks is to make sure there is an insulating
shim with the pads or use Brake Quiet type stuff on the back that
can help a loud squeak from high frequency vibration when
your not applying the brakes that goes away when you hit them.
The brake system needs to be very clean & free from dust & grease.
Make sure your calipers are lubricated properly. I tried all this.
If you research you will realize the importance of a properly
finished rotors that will assure proper "mating" to the new pads.
I have been hearing more people lately recommend new rotors
with brake pads instead of turning for this reason.
I still have occasional brake noise but it's considered normal.
I've heard ceramic pads last long but are noisy.
Just some thoughts, Good Luck.