Quick check gauge... It looks like a big tire gauge and works much the same way. Autozone has one. Wish I could post pics on answers.com
Check your coolant level.
I'd check the coolant level first, then the thermostat.
That is referred to as "back dating" and it is illegal at the federal level.
You should check the fluid level in the power steering pump.
check refrigerant level. if is ok,, replace the low presion swicht locate on acumulator.
Check the brake fluid level. If it is ok, take it to a garage that can diagnoise ABS problems.
Check the refrigerant level first.
If coolant level is correct - could be a defective sensor
The Transmission Fluid Check bolt is in the front right part of the Transmission Pan. This is in regards to a 1998 Chevy Cavalier (since I have one myself) and may not be correct for any other year. This bolt is just to check the fluid level is correct and will not drain the entire Transmission fluid reservoir, you must remove the pan to remove the transmission fluid.
ABOVE YOUR POWER STEERING RACK LOCATED ON THE FIREWALL
Check the refrigerant level. Your vehicle probably uses 134A refrigerant so it shouldn't be too expensive. If the refrigerant level is low, someone can add refrigerant for you or you can purchase the tools and do it yourself. Refrigerant is added with the engine running, and to the "low" side. Never allow the "High" side to be over pressure.
The 2002 Chevy Cavalier has a sealed transmission. On the front of the transmission there is a 11mm bolt that sticks out from the side. Loosen it, if ATF comes out, it's full, if not, take that cap back off and add some more until it comes out of the check plug (it's very easy to miss! look carefully, driver side, 11mm bolt protruding from side)