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

18,675

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.

18,675

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 1,297 nationwide Blazer listings starting at $2,000.

ZIP:

Search Chevrolet Blazer Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,840
#2 yetilikesbeer
yetilikesbeer
Reputation 1,110
#3 FordNut
FordNut
Reputation 680
View All

Related Models For Sale

Used Chevrolet TrailBlazer
95 Great Deals out of 5,207 listings starting at $900
Used Chevrolet Tahoe
859 Great Deals out of 27,932 listings starting at $1,700
Used Chevrolet S-10
13 Great Deals out of 1,614 listings starting at $1,800
Used Chevrolet Silverado 1500
2,577 Great Deals out of 151,148 listings starting at $1,500
Used GMC Jimmy
272 listings starting at $3,433
Used Ford Explorer
1,110 Great Deals out of 71,357 listings starting at $799
Used Jeep Grand Cherokee
902 Great Deals out of 66,432 listings starting at $300
Used Chevrolet Camaro
437 Great Deals out of 40,503 listings starting at $3,500
Used Jeep Cherokee
294 Great Deals out of 53,875 listings starting at $2,495
Used Ford F-150
3,031 Great Deals out of 207,234 listings starting at $1,990
Used Jeep Wrangler
510 Great Deals out of 18,332 listings starting at $2,900
Used Chevrolet Impala
891 Great Deals out of 35,196 listings starting at $1,700

Used Cars For Sale