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

23,175

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.

23,175

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

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

Your Answer

Add photo

Related Questions

Blazer

Looking for a Used Blazer in your area?

CarGurus has 1,141 nationwide Blazer listings starting at $1,995.

ZIP:

Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,920
#2 yetilikesbeer
yetilikesbeer
Reputation 1,210
#3 Rowefast
Rowefast
Reputation 910
View All

Related Models For Sale

Used Chevrolet TrailBlazer
75 Great Deals out of 4,338 listings starting at $650
Used Chevrolet Tahoe
605 Great Deals out of 27,656 listings starting at $600
Used Chevrolet S-10
4 Great Deals out of 1,419 listings starting at $1,995
Used Chevrolet Silverado 1500
1,960 Great Deals out of 159,918 listings starting at $1,995
Used GMC Jimmy
237 listings starting at $2,295
Used Ford Explorer
719 Great Deals out of 74,484 listings starting at $750
Used Ford F-150
2,426 Great Deals out of 210,091 listings starting at $895
Used Chevrolet Camaro
133 Great Deals out of 35,350 listings starting at $1,995
Used Chevrolet Suburban
380 Great Deals out of 18,571 listings starting at $1,795
Used Jeep Grand Cherokee
814 Great Deals out of 69,762 listings starting at $995
Used Chevrolet Impala
556 Great Deals out of 28,755 listings starting at $1,595
Used GMC Yukon
393 Great Deals out of 16,289 listings starting at $1,800

Used Cars For Sale