Why is the vent control on my 2002 Silverado not working?

Vent control 2002 Chevy Silverado won’t switch between floor, defrost or “main”. It is stuck on “main”. Do I need to replace actuator or is there a vacuum leak somewhere?

How do you change the selector switch on a Chevy Silverado?

Replacements are available for around $30, or you can try a DIY fix by taking the switch apart and re-heating all the solder joints on the back circuit board to ensure proper contact. To remove the selector switch: Lower the steering wheel all the way down. Put the truck in gear. Then, gently pull the dash off to gain access.

Can a Chevy Silverado have a slipping 4WD system?

So if your Chevy Silverado is showing symptoms of a slipping 4WD system, continue reading for common diagnoses and repairs. This article applies to the Chevrolet Silverado GMT800 (1999-2006). 4WD systems give truck owners unprecedented abilities when it comes to gaining traction, both on and off the road.

What to do about a bad transfer case on a Silverado 1500?

Selector switch in a Silverado 1500. A bad transfer case motor will often throw a code on your dash, but can also be diagnosed if you fail to hear the motor spinning once the 4WD gear is engaged. A new transfer case motor will cost you around $200.

Vent control 2002 Chevy Silverado won’t switch between floor, defrost or “main”. It is stuck on “main”. Do I need to replace actuator or is there a vacuum leak somewhere?

Can a shifting solenoid be replaced on a Chevy Silverado?

A shifting solenoid is pretty easy to replace; although, you have to remove the transmission pan to change them. A general trouble code may show that the transmission is slipping, but not pinpoint what the issue may be. Figure 2.

Why is my shift gauge not working on my Chevy Silverado?

Gauges that are not working could mean a faulty ignition switch. This has been an issue on this truck series. A bad ignition means that there may not be full voltage available to activate the shift solenoids. Replacing the switch will cure the problem. Figure 1. Look for blown fuses or damaged wiring.

Why are there no reverse slips in Chevy Silverado?

Reverse slips are slow to engage or is out: 1-2 shift does not happen at full throttle, there is a shudder when shifting, delayed or harsh shift: Issue with the second gear apply circuit, service servo assembly, or 1-2 accumulator – pressure test No Reverse in 2nd or 4th gear, 1st and 3rd only:

How does the climate system control the defroster?

The climate system is responsible for controlling the position of the defroster actuator which is connected to the air position door in the heater plenum. This actuator controls defrost, middle and lower air vents. When it fails it can do so in the defrost position and must be replaced.

What causes a car defroster to get stuck?

Heat, extreme cold and vibration of the engine and car’s suspension can cause component of the defroster to fail. In some cases an electrical motor can burn out or the gears inside the actuator can break causing the defroster door to get stuck.

What causes air vents to stay in defrost position?

If you have an older car then the defroster system is controlled by using vacuum supplied by the engine. Lift the hood and inspect the vacuum hose or tube that leads from the intake manifold to the passenger’s side firewall. The image below shows a typical line break which causes the vents to stay in the defrost position.

What’s the problem with my 2002 Silverado a / C?

2002 chev silverado a/c control is stuck on defrost position and will not allow the a/c deliver cold air to cab, but continues on defrost which has air coming out to windshield. What repairs are neede … read more

Why does my Chevy Silverado only blow cold air?

Had to replace actuator with AC Delco because the Heat/Cool was backwards. I am on my 2nd Mode door actuator. After it was installed it worked good during testing, now it won’t move and is stuck in defrost. What could be wrong? … read more I have a 2002 Chevy silverado that only blows cold AC air through the defrost.

What to do if your GM fan won’t defrost?

See if this fixes the problem. Many of GM’s AC control heads have a built in reset feature that when power is removed and then applied it will go through a cycle that activates all the vent doors and mode doors. It’s worth a try.

Why does my Chevy Silverado blow hot air on one side?

This article applies to the Chevrolet Silverado (1999-Present). Does your Silverado blow hot air on one side and cold air on the other? If you have dual zone controls you may have run into this problem before. There is a way to fix this if you’re patient and willing to troubleshoot your way through it.

How to test a Chevy Silverado HVAC system?

Plug in the electrical harness. Now set the fan and heater controls to off and the temperature controls to the coldest setting. Reconnect the battery, turn the key and listen for the actuator to click. Wait five minutes then test the controls to see if it worked.

Why is the blend door on my Chevy Silverado not working?

If it seems like one side is stuck at one temperature only, it could mean the blend door actuator is no longer working. The actuator turns a door to switch between warm and cold air, but there are multiple actuators in your truck. To figure out which one isn’t working shut off the truck and turn the fans off.

How much does a Chevy Silverado AC cost?

This can result in incorrect air delivery or temperature. If this occurs, fault code (s) stored in the HVAC control module should be available to assist with diagnoses. The average cost for a Chevrolet Silverado 1500 AC Diagnosis is between $53 -$67. Learn More

Why does my Chevy Silverado have no heat?

One mid vent also produces no air. One heater line to the firewall from the engine is hot while the other is cold. a/c and heat all comes out of defrost vent and cannot switch from hot to cold without shouting off engine for a little bit. ac and heat doesnt work,fan worksin three of four speeds. Ditto.

How much does a Chevy Silverado heater cost?

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code (s) stored in the HVAC control module should be available to assist with diagnoses. The average cost for a Chevrolet Silverado 1500 AC Diagnosis is between $53 -$67.

Where can I buy a Chevy Silverado a / c kit?

Shop AutoZone for Chevrolet Silverado 1500 A/C Kit. 10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only

Where is the actuator located on a Chevy Silverado?

The actuator is located behind the airbag assembly, so it has to come out. This is extremely dangerous, and the air bag need to be handle delicately to avoid any accidental deployments. If you haven’t already, take the time to make sure the vehicle’s battery is not connected. Disable the airbag.

Is there issue with auto climate control not changing from vent to vent?

Has anyone had an issue with the auto climate control not changing from vent to vent? Re: Fan Only Blows Defrost, Won’t Change To Floor Or Vent. Pull the negative battery cable and re-install, making sure it is very tight (also check the positive to make sure it is tight). See if this fixes the problem.

How does a Chevy Silverado blend door work?

The heater blend doors act as a gateway to the vehicle’s ventilation system. When heat is built up inside of the heater core, the actuator door shifts to allow the hot air through the system, and when the climate control is turned to cool, the door flaps in the other direction closing off the heater core.

Why does my AC not switch from vent to floor?

Ac won’t switch from vent to floor to defrost. have the same problem? This is common when the mode actuator goes out here is a guide to help you fix the problem. Please run down this guide and report back. helpful? I had to get a new mode actuator was not that bad installing it had to pay $78.00 for the part. helpful?

Why is the vent control on my 2002 Silverado not working?