Why does my GMC Sierra blow hot air?

Why does my GMC Sierra blow hot air?

Our 04 Sierra 2500HD has had on and off problems the last year. Our most recent two was blowing warm air and then stopped altogether. No diagnostic codes. But our sons’ very smart “GMC guru” figured out it was the ignition switch.

Why does my AC blow cold and then start blowing ambient temp air?

My AC will blow cold and then start blowing ambient temp air. Why? My AC will blow cold and then start blowing ambient temp air. Why? I have a 2002 Chevy Suburban 1500 LT. It has a climate Second opinion] I have a 2002 Chevy Suburban 1500 LT. It has a climate control (automatic settings for fan blowing and which vents to come … read more

Why does my Chevy tracker AC blow cold?

2003 Chevy Tracker – AC doesn’t get completely cold. Found/repaired short in relay wiring, so fuse doesn’t blow any more. Freon pressure is … read more

Can a car air conditioner blow cold air?

ac will blow cold for awhile and then the compressor shuts down and blows warm air. I can turn the ac button off for a few minutes and then turn it … read more Air conditioning works fine on startup, very cold air. When vehicle is driven for a few miles, air conditioning stops blowing cold air, ie compressor clutch disengaged.

Our 04 Sierra 2500HD has had on and off problems the last year. Our most recent two was blowing warm air and then stopped altogether. No diagnostic codes. But our sons’ very smart “GMC guru” figured out it was the ignition switch.

Why do the vents in my Chevy Silverado blow only?

Recharge the A/C. There may be air trapped in the system. Hot coolant is responsible for passing through the heater core, creating hot air which can than pass through the vents and into the cabin. On some occasions air can become trapped in the system, stopping the coolant from doing its job.

How to fix a car that’s blowing hot air?

Scotty Kilmer, mechanic for the last 45 years, shows how to fix a car that is blowing really hot air, even though the AC system is turned on full cold. Often a bad main AC control unit goes bad, and he shows how easy it can be to replace. 1. Autel Diagnostic Tool: http://amzn.to/2nrT5op 2. Screwdriver set: http://amzn.to/2jaHIfP 3.

How do you get air out of a Chevy Silverado?

In these cases, a coolant back flush is required to remove the air from the heating system. Locate the hoses that enter the heater core. Disconnect them to release any trapped air. Reconnect the lines. Top off the coolant. Flgure 3. Flush the heater system. This procedure refers to a quick release of air from the system.

Recharge the A/C. There may be air trapped in the system. Hot coolant is responsible for passing through the heater core, creating hot air which can than pass through the vents and into the cabin. On some occasions air can become trapped in the system, stopping the coolant from doing its job.

Why do my vents blow only hot or cold air?

Chevrolet Silverado 1999-2006: Why Do My Vents Blow Only Hot or Cold Air? The Chevy Silverado climate control system uses several different components that come together to either cool down or heat up the cabin. When one or more of these components fails, the heat or cold air capabilities go along with it.

In these cases, a coolant back flush is required to remove the air from the heating system. Locate the hoses that enter the heater core. Disconnect them to release any trapped air. Reconnect the lines. Top off the coolant. Flgure 3. Flush the heater system. This procedure refers to a quick release of air from the system.