You may have a vacuume leak, when ure at low speeds there is alot of engine vaccume, as u go faster the vacume falls and if the blower sytem is vacue controld the ducts may close from lack of vacume.
Change your thermostat. Mine had the same problem and it was stuck open.
Chevy Lumina has not the carborator.
Where is the computer on a 95 Chevy lumina
how to change rotors on a 2001 Chevy lumina
Yes
1994 Chevy lumina freon type
Where is the crank sensor on a 95 chevy lumina car ?
How do you convert the ac in a 1992 Chevy lumina
yes it will fit
it may be that you need to replace your thermastat, or coolent level is low wrong mixture
can you tell me where my fusible link is for my 1994 Chevy lumina
There is no such thing as a 2005 Chevy Lumina