What problems would a 1991 firebird with a 5.0 engine have?

If a 93 Aerostar won't select vent or heat and the air just comes through the defroster is it the selector? How manydifferent engines does duramax have? Where is the location of the oil sensor dodge ram cummins 5.9? Where is the starter on 98 Plymouth breeze? What would cause a 1989 Chevy pickup to run like it is flooding out? How do you repair the speedometer odometer on a 1989 New Yorker? Where is the VIN number located on a 1973 Chevy silverado? What does code P0630 mean on dodge neon? How much does the Ford E-250 cargo van weigh? Where is the muffler located on a 2000 Mercury Cougar? How you remove and replace the entire front headlight unit not just the bulb on a 99 Mazda 626? How big is 1997 thunderbird gas tank? Which is better a composite shim or wood shim? Where is the catalytic converter on a 2001 Jeep Cherokee? Can you fight your car repossession in Texas if you paid them late? What was the Japanese first car sold in the US? What is the purpose of the EGR valve position sensor on a 1994 Explorer XLT? What sound does an engine? Where is spare tire Chrysler Town and Country 2006? How do you open the hood of a 1985 corvette if the release cable is broken on the passengers side?

What problems would a 1991 firebird with a 5.0 engine have?