Heat only blowing through dash, checked actuators, what now?

Asked by Nov 18, 2015 at 12:53 PM about the 2002 Chevrolet Blazer 4 Door LT 4WD

Question type: Maintenance & Repair

Hey guys,

This is on a 2002 Chevy Blazer.
The air gets heated/cooled fine; blower intensity is fine.

The actuator behind the glove box is moving the white plastic arm and the actuator near the gas pedal is also moving the white plastic arm there, so I think the vacuum is ok.  What else is involved in controlling where the air blows?

I can hear a small noise when the actuator behind the glove box moves the white plastic arm past the middle point, like plastic shifting against plastic followed by a very light pop, but then it continues on its path...is this normal?

Thanks a bunch in advance!

4 Answers

25,805

Check the actuator is still connected to the door itself, the door is hinged on a metal rod and the actuator snaps over the end of that rod. It may have come undone. If you can remove the actuator make sure the door swings freely.

Thanks KenF, I've visually confirmed that the metal arm is connected to the plastic piece (that I assume is attached to the door) I see the actuator moving the arm, so I'm sure it can move freely, but I'll take the actuators off and confirm.

25,805

If the door is able to swing freely but the actuator isn't moving it the full range then you likely have a bad actuator. If you can detach it from the rod, leave it plugged in to the wiring harness and change the vent settings and see if the actuator is responding like it should, if not replace it.

Best Answer Mark helpful

Awesome, thanks! I'll be testing that soon.

Your Answer

Blazer

Looking for a Used Blazer in your area?

CarGurus has 1,160 nationwide Blazer listings starting at $950.

ZIP:

Chevrolet Blazer Experts

  • #1
    Andrew Olsen
    Reputation
    2,030
  • #2
    yetilikesbeer
    Reputation
    1,330
  • #3
    Rowefast
    Reputation
    1,030
View All

Related Models For Sale

Used Chevrolet TrailBlazer
110 Great Deals out of 4,731 listings starting at $1,000
Used Chevrolet Tahoe
647 Great Deals out of 36,708 listings starting at $1,800
Used Chevrolet S-10
7 Great Deals out of 1,276 listings starting at $1,800
Used Chevrolet Silverado 1500
2,146 Great Deals out of 183,564 listings starting at $1,898
Used GMC Jimmy
247 listings starting at $1,995
Used Chevrolet Camaro
424 Great Deals out of 31,920 listings starting at $2,395
Used Ford Explorer
812 Great Deals out of 63,292 listings starting at $1,495
Used Jeep Grand Cherokee
938 Great Deals out of 71,552 listings starting at $995
Used Ford F-150
2,228 Great Deals out of 182,699 listings starting at $1,500
Used Jeep Cherokee
411 Great Deals out of 41,180 listings starting at $1,800
Used Jeep Wrangler
281 Great Deals out of 15,908 listings starting at $2,997

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.