97 k1500 heat

Incredible Hulk · May 2, 2016

So what is supposed happen when you adjust the heat control knob.. Is it electric or vacuum ?

Summer is here and mine is stuck wide open on heat

Dr.Zoom · May 2, 2016

What year is your truck? I know 95 up a servo turns and doors in the ductwork open/close, so electric. I'm pretty sure I found the info through a search here how to swap them and position everything so it's lined up right. If you hear a servo when you turn the knob then the linkage is likely the problem.

Incredible Hulk · May 2, 2016

97 I don't think I heard anything happening.. I'll take a closer look tomorrow ... Any idea where the servo is located?

Dr.Zoom · May 2, 2016

Actuator is what I should have said instead of servo. Mode door actuator is for defrost, dash vents, floor vents. Blend door actuator is for the mix. Then there is one that opens for fresh air/cabin recirculate.

xc_hide_links_from_guests_guests_error_hide_media

skip to 3:40 to see where he points to the mix actuator.

Dr.Zoom · May 2, 2016

A little later he talks about making sure the actuator is indexed. That's important.

Dr.Zoom · May 2, 2016

Just noticed someone asking about the rods which can also lead to things not working right.

http://www.gmt400.com/threads/blend-door-assembly.33933/ One of the members responding worked on his last year so, you might be able to hijack a little and ask in that thread too.

Dr.Zoom · May 2, 2016

And I had a derr moment when I realized you put your year in the title of the thread. Derr.

Incredible Hulk · May 2, 2016

Cool... Thanks for the help

97 k1500 heat

Incredible Hulk

I'm Awesome

Dr.Zoom

Hi Tech Redneck

Incredible Hulk

I'm Awesome

Dr.Zoom

Hi Tech Redneck

Dr.Zoom

Hi Tech Redneck

Dr.Zoom

Hi Tech Redneck

Dr.Zoom

Hi Tech Redneck

Incredible Hulk

I'm Awesome

Similar threads

Latest posts

Staff online

Members online

Forum statistics

Share this page