Heater

[Streetfighter]

Heater not working, ac is working.
Suggestions!
Streetfighter

 

[movietvet]

Welcome to the forum from Oregon.

Ok, I need more info. Blows but has no heat, correct? Care to share the year, make and model, or is it a secret? Auto temp control or manual?

 

[Drunkcanuk]

Heater not working, ac is working.
Suggestions!
Streetfighter

Suggestions are to let us know what the heck you are working on! Lol
Year, make, motor, etc.
The more information you give, the better the responses will be.

 

[454cid]

My suggestion, given the time of year, would be to fix your heat

 

[RichLo]

What temp does your engine coolant tamp gauge get up to?

When was the last time your coolant was flushed?

 

[Caman96]

 

[Streetfighter]

Sorry, 94 Chevy 1500c v6.
Put on heat and light above temp bar just flashes. No heat. Ideas?

 

[Streetfighter]

Manuel adjustment. Ac blows cold but no heat. Light just blinks

 

[Scooterwrench]

Temp indicator flashing is an error code I believe and if flashing then it's not manual,it's electronic control. If it's blowing air but not warm air then more than likely blend door actuator.

88-98 Service Manuals

Over the years I have collected a bunch of GM service literature. Links to PDF Scans of service and STG manuals and a links to the Parts manuals. You'll need the FREE Adobe Acrobat reader to open these files. Get it directly from Adobe here {http://get.adobe.com/reader/} If you're not...

www.gmt400.com

Anything you need to know about your truck can be found here.

 

[Scooterwrench]

I just looked up the diagnostic procedure for my truck with the ECC. The temp. arrows flashing means the temp. door actuator is malfunctioning.