Where is the 2/3 solenode valve located on the 2007 saturn aura xr..can i see a picture?

SOURCE: fuel filter

does not have a filter that is replaceable it is in the tank.One of gm's brighter ideas!!!! they say you do not need to replace

SOURCE: How to replace brakes on a 2007 saturn aura

you will need a 19mm socket to get the wheels off, a 13mm to get the caliper off, and a 15mm to get the caliper bracket off and rotor loose.

SOURCE: How hard is it to change alternator and thermostat

Those are both hardy parts that should last close to 100,000 miles, but if you need to replace them it's not real difficult, especially since there's plenty of room under the hood. The alternator is a matter of 3 or 4 bolts. Remove the plug-in wire harness from the alternator, loosen the adjuster bolt to take tension off the belt, then remove the mounting bolts and pull the alternator. Reverse the steps for the install. For the thermostat, follow the upper radiator hose to the point where it enters the engine. The hose is connected to a metal housing that's bolted to the engine. Unbolt the housing from the engine to expose the thermostat. Lift the thermostat out, remove all traces of gasket from the housing and engine, then install the new thermostat and gasket.

SOURCE: When should the timing chain for a 2007 Saturn

Timing chains don't have a regular service interval like a timing belt does. It should last the life of the vehicle.