on max a/c air blows out floor vent hard, weak from dash vents; floor vent blows on all settings except defrost..


Asked by Sep 25, 2015 at 06:05 PM about the 1991 Chevrolet C/K 2500

Question type: Maintenance & Repair

the diaphragm at the floor vent works as it closes it on defrost mode; what
component would not be closing it on other modes like max a/c?

2 Answers

Kelly Mayo

check for a broken vacuum hose..

Andrew Olsen

They use a blend door motor, its most likely weak. Make sure the linkage isn't broken. It's under the driver side dash towards the center.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet C/K 2500 Questions

Chevrolet C/K 2500 Experts

#1 joemom
Reputation 160
#2 Rowefast
Reputation 120
#3 tennisshoes
Reputation 110
View All

Related Models For Sale

Used Chevrolet C/K 3500"
301 listings starting at $5,600
Used Chevrolet C/K 1500"
1,131 listings starting at $2,400
Used GMC Sierra 2500"
222 listings starting at $2,895
Used Ford F-250"
603 listings starting at $3,995
Used Ford F-150"
3,174 Great Deals out of 216,366 listings starting at $1,900
Used GMC Sierra 1500"
1,023 Great Deals out of 56,283 listings starting at $2,499

Used Cars For Sale

2000 Chevrolet C/K 2500 For Sale
37 listings starting at $1,995
1997 Chevrolet C/K 2500 For Sale
28 listings starting at $3,599