Very simple, there are 6 screws located around the cover. Just tightened them up with hand-tight torque; DO NOT OVER-TIGHT, THE PLASTIC WILL BROKE! If in case it had been already tight, untight a little bit and re-tighten them.
The aboves are philips type screws; located to the sides. You can use normal philips screw driver for them.
These screws are also philips. This is under the steering column. I was surprised to see how loose they are just now.
Then go for a test drive. Yeah! The squeaks had almost gone! Good Day :)