I have a 2010 chevy aveo lt 1.6 Lt.looking for gap size for sparkplugs..

some of the spares have a tps check them if no sensor then one of the sensors are failing

this link should help Service Manual2008 Aveo Diagnostic Trouble Code DTC U0001

This is normal operation. As long as it does not overheat you are fine.

your going to need to get a couple of extra tools will need a hub nut socket and a long pry bar --the following link will help you along the basics are the same
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It may be a grounding problem in the wiring.. probably the turn signal switch that is located inside the steering column..These switches have plastic parts that can crack and close a circuit. You need a dealer repair as there are various sensors and sensitive wiring inside the column that controls deployment of the air bag.

Just tighten hard as you can,I have never torque my brake parts.

Yes, it is listed as an interference engine.

you will need to unscrew the center console

Yes, it has too or the car would overheat, check in the rear and front of the radiator.

Is there a sticker under the hood somewhere? I would look there, but i would think about .035 or .040