Cadillac Owners Forum banner

1 - 10 of 10 Posts

·
Registered
2005 Deville base
Joined
·
100 Posts
Discussion Starter #1
My 2005 DeVille has a problem with the AC - only the vents on the drivers side are blowing cold, and the passenger side dash vents are blowing how air.
Any ideas what the problem could be?
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,846 Posts
My 2005 DeVille has a problem with the AC - only the vents on the drivers side are blowing cold, and the passenger side dash vents are blowing how air.
Any ideas what the problem could be?
========================
since ALL of the climate control actuators are electronic - and are monitored by the computer -
STEP #1 - ALWAYS - check for DTC's - Diagnostic Trouble Codes - using the on-board scanner -
if you don't know how - go here -

post any codes you have -
ALONG WITH THEIR DEFINITIONS -

include whether they are C-Current or H-History -

for code definitions - go here -


here is a how-to video -

=========================

you will probably find a code for a faulty #2 passenger side MIX DOOR ACTUATOR -
along with a code for the #3 - back seat control out of range -

BOTH of these will be fixed by replacing the #2 - passenger side actuator -
located just left of the glove box -

you got lucky - it is the easiest to replace by removing the glove box -
the part you need is ACDELCO 15-73428 -$65 - with free shipping -

OR - $60 - with free shipping - on ebay -

and here is a HowTo - including pics -

SPECIAL NOTE -
when removing the knee bolster - PULL STRAIGHT BACK - DO NOT PULL DOWN -
there are plastic pins that WILL break if you pull it down -
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,846 Posts
Code B0408 or B0409 or is that for the drivers side?
================
yup - those are driver side codes -

passenger side are B0419 or B0423 - and B0428 or B0429 back seat -
 

·
Registered
2000 Deville Base, 2019 Corvette Grand Sport
Joined
·
1,096 Posts
Just pulled em:
B 0429
B 0419
P 0442
U 1000
B 0249
I have done both sides on my car, the one on the drivers side being two months ago. The one your going to be doing (next to the glove box) is really easy. As Byrd said, you got lucky.
 

·
Registered
2005 Deville base
Joined
·
100 Posts
Discussion Starter #8
I finally got access to the unit behind the glovebox. There is a bolt in the center of the actuator. Anyone know what tool I need to pull out that bolt? I am having trouble pulling it out
 

·
Registered
2000 Deville Base, 2019 Corvette Grand Sport
Joined
·
1,096 Posts
Are you talking about this hole? It can only be a Phillips head or a small (7mm) hex bolt? I did mine a couple of years ago so my memory is a little fuzzy but I do remember it was very easy and had no trouble getting it out.
584510
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,846 Posts
I finally got access to the unit behind the glovebox. There is a bolt in the center of the actuator. Anyone know what tool I need to pull out that bolt? I am having trouble pulling it out
========================
There is a bolt in the center of the actuator.
Anyone know what tool I need to pull out that bolt?

did you look at the HowTo I included in post #2?
EVERYTHING you need to know - including which tools are needed - are in that HowTo -

and if you don't have a 5.5mm socket - try a 7/32
 
1 - 10 of 10 Posts
Top