Defogger Problems of Chevrolet S10

Heater control only lets air come from a/c vents no defroster this is a driving hazard.

See all problems of the 2003 Chevrolet S10 🔎.

I have a S10 Chevrolet truck an the hvac system is inoperative. I have little or no defrost system.

This vehicle has had a problem with the defroster that began at under 20,000 miles. The dealer has attempted repairs twice under warranty. As I am once again having the problem, and off of the warranty, I began looking on the internet for information. It turns out that the transfer case vacuum switch goes bad and allows the fluid in the transfer case to be drawn up into the hvac system. This causes, among other problems, the defroster to not operate. This is a very difficult and expensive problem to correct as the entire hvac system must be flushed out and any bad parts replaced. This seems to be fairly common and yet gm will do nothing off warranty, and in my case did not correct the problem under warranty. I believe a recall is in order.

See all problems of the 2002 Chevrolet S10 🔎.

No summary listed for above vehicle.

See all problems of the 2000 Chevrolet S10 🔎.

Consumer states exhaust fumes and smog comes through ventilation system, there is no way to close vents or to stop fumes from coming inside, consumer also states the smells cause bad headaches and nausea.

Heater/ac does not get hot/cold. Blower runs but little or no air comes out of the vents.

See all problems of the 1996 Chevrolet S10 🔎.

When heater control knob on dash is in blue or cold setting ,and contol if off,hot air of 110 degrees is noticed in foot air duct area. Also, when control is in passenger floor position and temp control in blue or cold air area, hot air still blows. Cannot get outside fresh air in interior without getting hot air. Only way to cool off cabin is to run air conditioning. Suspect that air blower duct relay,actuator, or vent door is not being regulated properly to channel the air in proper manner. Taken to dealer and they are checking.

See all problems of the 1998 Chevrolet S10 🔎.

Heating system continuously runs and cannot be manually turned off, cause unknown. Please give any further details.