What to do when your GM Truck heater wont turn off?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. When I turn on my heater (moving the temp control from cold to hot), most of the time it will stay on hot even after I turn it back to cold. Not sure what to do.

What’s the temp on my Silverado truck?

My temp gauge was well under 210 driving down the highway, then all of a sudden it jumps up past 210, between 210 and 260. I pulled over and felt around the engine, and it wasnt even hot. Then I got back into my truck and a few seconds later, the temp gauge jumped back behind 210 and stayed there.

How to fix Chevy GMC Truck heater blend door?

1999 – 2004? Chevy GMC Truck Heater Blend Door Stuck Easy Fix How-to – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

What’s the temp on a GMC Silverado 350 TBI?

I have a 1995 GMC K1500 Z71 350 TBI. The temp. gauge fluctuates constantly between normal and 210^ in cool weather (40^ & below). Also during accleration it will rise to 210^ and drop back down, never staying at a constant temp.

Why does my Duramax diesel engine keep overheating?

I and 3 friends with duramax diesels are having same issues. The top radiator hose is collapsing ,preventing flow of coolant to engine. Replacing hose seems to fix problem for a while but need to figure out why the hose is collapsing when engine is under heavy load ,pulling trailer up long grades.

What should I do if my truck overheats?

The thermostat is a very quick and easy item to replace. When your truck is overheating, make sure the coolant level is full before testing. Fill the radiator with coolant and allow the truck to run for 20 minutes. This will determine if the coolant level is low, causing the truck to overheat.

Why does my Chevy truck have no heat?

When the thermostat opens the coolant level will drop in the radiator, at this point keep filling it as necessary until full. Like joemom says, make sure the thermostat is working properly. 9 people found this helpful. I changed my thermostat all of my hoes is getting hot and it just blowing cold air out my truck I have a 93 Chevy.

Is the Chevy CK pickup an air conditioner?

Chevy CK Pickup 1995, HVAC Blower Motor by UAC®. UAC’s line of electrical components includes the blower motors that are necessary for the proper function of an A/C System. They are produced at top tier facilities with strong quality… Chevy CK Pickup 1995, HVAC Heater Core by UAC®.

What kind of condenser does a 1995 Chevy CK have?

Chevy CK Pickup 1995, A/C Condenser by APDI®. The condenser is part of the A/C system. It receives the hot, high-pressure gaseous refrigerant from the compressor and cools it to a warm liquid state, although still under high pressure…. Chevy C1500 / C2500 / C3500 / K1500 / K2500 / K3500 1995, A/C Condenser by Sherman®.

Why does my GMC 1500 heater not come down?

I HAVE A 2000 GMC PICKUP Z71 THAT THE CONTORL FOR THE TEMPERATURE DOES NOT COME DOWN UNTIL THE TRUCK IS SHUT OFF. THE HEATER CONTOL PANEL WAS JUST CHANGED. ALSO IT HAS AC AND MANUAL CONTROLS … read more

What kind of heater does a 1991 CK Cheyenne have?

Automotive Diagnostic Spe… Vocational, Technical or Tra… have 1991 chevy ck cheyenne pickup. does not overheat but cab heat is always on high even when turned to cold. A/C flashes on control panel … read more

Why is the temperature gauge on my Chevy truck not working?

All I have the same issue, I own a 1996 chevy pickup c1500, before I replaced the temperature gauge sensor, the gage read two lines below 210, after I replace the temp gradually climbs but the engine not as hot as where the gage reads, need advice stephan is on point for the diagnostic procedure. First.it’s not a thermostat issue.

How does a heater work in a truck?

As you drive your truck, the engine gets warm. This heats the coolant, and the cooling system has to circulate it through the radiator to bring the temperature back down. When you turn on your heater, the coolant flows through the heater core inside your dashboard. This allows the hot air to blow through your vents and heat up your cabin.

What to do if your car heater is blowing cold air?

If the coolant levels are fine and there doesn’t seem to be a problem with your heater core, you may need to replace some of the control buttons or your heater control valve. The heater control valve is underneath your hood and acts as the switch that turns the heat on and off.

What should I do if my heater is not working?

If your heater’s controls seem to be faulty, first unplug the unit and plug it back in to see if that resolves the issue. Next, check the heater’s thermostat (if it has one) and make sure it’s set to the correct setting. Try resetting it to see if that fixes the problem.

Is there a problem with my Ford truck heater?

Occasionally the driver side air will go from AC to heat! Have to stop the car and restart it to get it to be AC again. Time to sell and buy a Ford. Intermittent problem with driver side ac blows hot passenger side ice cold not all the time shut truck off 20-30 min.

Why does my Chevy Silverado heater keep blowing out hot air?

Only remedy once heat starts is to restart engine. Seems to happen after relative high speed and slow down, will kick off when acceleration resumes. Also seems to happen between 75-85 deg outside temp the most often. It has become major annoyance but expensive fix. When you drive down the road the AC on the drivers side starts blowing out hot air.

Is there a problem with my GMC dual climate control heater?

’04 GMC Dual Climate control heater issue | The largest community for snow plowing and ice management professionals. Find discussions on weather, plowing equipment and tips for growing your business. My 2004 2500HD with dual climate controls (manual) has an issue.

Why are the heated seats on my Silverado not working?

Hi I have a 2003 Silverado with the heated seats and while testing them out before it gets cold outside I have noticed that I am having trouble with them turning off by themself. Seems to be a problem with the drivers side mostly, but when the drivers side has a problem it shuts both sides off.

What happens when the heater won’t turn off?

What happens with these types of system is that when the control head can’t determine the position of the door because of a faulty reading from the actuator, it forces the temp door to a default position, which happens to be the hot position. So I just need to replace the temp actuator?

What to do if your Chevy Silverado heater is not running?

Turn the heater on the highest setting and set the fan speed to the highest setting. Open the hood and place your hand over the upper radiator hose. Check to see if it is warm. If it is, then the coolant is flowing through the cooling system as it should. Check the radiator to heater core hose.

Why does my GMC Sierra turn to high heat?

With the A/C on, the drivers side turns to high heat at intermittent times. When the mileage was low, I’d find a pot hole or large lane marker and the little jolt would turn off the heat. Now we are at full stop, shut it off, remove the key and restart.

Why is my GMC Sierra 2500 not working?

’06 Chevrolet Silverado 2500 Duramax: Vents won’t switch properly at all. Sometimes if I switch them, pull over and shut my truck off and turn it back on then it will sometimes switch to that vent. But only works on defrost and bi-level vents. Floor or any mixed doesn’t work and will switch to one or the other that works.

How does a Chevy Silverado engine heater work?

Some of this coolant is diverted from the cooling system into a heater core. A fan then blows on the core to blow warm into the air into the cabin. Before you go replacing a heating system in your Silverado, however, troubleshoot the heater in your truck. Turn the engine on and allow the engine to warm up to normal operating temperature.

What to do when your GM Truck heater wont turn off?