What are common reasons my GMC Safari has heater problems?

What are common reasons my GMC Safari has heater problems? While there are a variety of reasons your GMC Safari heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. See what others are asking about their GMC Safari.

What to do when your DS4 heater is not working?

A press on + or – for the blower has no effect. In down-grade mode, the temperature reference value is fixed (and displayed) at the driver’s reference value. A press on + or – for the blower has no effect. In down-grade mode, the “blower” function is provided in automatic mode. A press on + or – for the blower has no effect.

Why is the blower motor on my DS4 not working?

Re your question — Yesterday when it stopped working, the temperature dials on both sides increased and decreased temperature when dials rotated and displayed normal — it was just blower motor would not operate, so I can’t understand how it’s just started working again.

What to do if your Ford Fusion heater is not working?

When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings. If the resistor isn…

What happens when the blower fails on a Chevy Equinox?

When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.

What happens if the heater control valve fails?

When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p…

Why does my GMC heater blower not work?

I have replaced the black bosch relay behind the glovebox, the blower resistor and the blower motor and still cannot get the blower to work on high. I remember in older model years of gmc’s and chevys that their was a high speed blower relay that caused this issue. If there is a high speed relay, I can’t find it. Any suggestions?

Why does my heater not work on high speed?

Heater blower motor will not work on high speed? I have replaced the black bosch relay behind the glovebox, the blower resistor and the blower motor and still cannot get the blower to work on high. I remember in older model years of gmc’s and chevys that their was a high speed blower relay that caused this issue.

What kind of blower does not work on high?

1997 GMC C1500 Heater/AC Blower Will Not Work on HIGH. 1997 GMC C1500 Heater/AC blower will not work on HIGH. I have replaced the black BOSCH relay behind the glovebox, the blower RESISTOR and the blower MOTOR and still cannot get the blower to work on HIGH.

Is the Silverado 1500 AC blowing cool air?

I have a 2001 Silverado 1500 with the 4.8L engine. The AC works fine but the heater only blows cool air. We just replaced the thermostat and it still doesn’t work right.

Why does my car heater blow cold air instead of hot?

If your car heater blows cold air instead of hot air it might stuck vent or plugged up heater core. In order to make sure that the heater is warm we will use OBD scanner to read the real time coolant temperature.

Is the a / C working on my GMC Safari van?

2001 GMC Safari Van. The a/c works but will not blow the any air hot or cold out front vents. There is a trickle of air on windshield and floor vents. We already replaced blower motor and dash switches and charged the freon. Front and middle passengers uncomfortable.

What to do if your heater is blowing cold air?

Coolant level: If your coolant level is low, your heater core may not be getting enough warmed coolant through it to produce adequate heat. Solution: Top up the coolant and see if it helps. If the level is low due to a leak, track down the source and get it repaired.