what is a tac code?
 

my girlfriends has a 99 y87 camaro and her ses light is on, i had a mechanic check it out and it was throwing codes for the maf and the tac, well we replaced the maf but yet the tac code is still there, he didnt know what the tac is, so i had him ask 2 gm mechanics and they dont know either, so can anyone tell me what a tac is and how would i fix it

A search on google braught up Thermostatic Air Cleaner. Its some sort of emissions thing that uses heat from the exhaust to warm up the engine durring cold starts.

thanks man, but u wouldnt know how to fix this would you

Copied this from the web site:

Some related parts of a thermostatic air cleaner system can include, but not limited to: exhaust manifold heat shroud, hot air pipe (tube), air door (valve) assembly, vacuum diaphragm and hoses, and a temperature sensor.

thanks man for the info