Cadillac Owners Forum banner

1 - 8 of 8 Posts

·
Registered
Joined
·
4 Posts
Discussion Starter #1
The passenger side of my 2004 Deville blows hot occasionally. What might be the issue? What are my options?
 

·
2004 Deville
2004 Deville, Silver, Gone, but not forgotten, 1972 Eldorado, 1974 eldorado, 1975 CDV
Joined
·
686 Posts
First, you should use the cars built in scanner to check for codes, See the sticky "How to check for codes" on the previous page to learn how.
How To Pull Codes (DTC's)
pay attention to codes that start with a "B" Then post the code here and someone will chime in.
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,658 Posts
The passenger side of my 2004 Deville blows hot occasionally. What might be the issue? What are my options?
=======================
The passenger side of my 2004 Deville blows hot occasionally.
OK - so - what's the actual problem?
is the climate control set to COLD - and the passenger side occasionally blows HOT?
OR is the climate control set to WARM - and the passenger side occasionally blows HOT?
OR is the climate control set to HOT - and the passenger side doesn't always blow HOT?

is the passenger side climate control turned ON or OFF?

-----------------------

check for DTC's - Diagnostic Trouble Codes -
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 -

------------------------------

climate control codes are usually "B" codes
 

·
Registered
Joined
·
4 Posts
Discussion Starter #4
Hello, so here are the codes I got.

Body Codes:
B0248 - Mode Door Inoperative Error (C-Current)
B0419 - Air Mix Door #2 Range Error (C-Current)
B0429 - Temperature Control #3 Rear Circuit Range/Performance (H-History)
B1004 - Keep Alive Memory (KAM) (H-History)

Chassis Codes:
C1295 - Brake Lamp Switch Circuit Open (H-History)
C1298 - PCM Class 2 Serial Data Link Malfunction (H-History)
C0660 - Level Control Exhaust Valve Circuit Malfunction (C-Current)

Network Codes:
U1064 - Loss of Communications with DIM (H-History)
U1016 - Loss of Class 2 Communication with VCM (H-History)

I know it's a lot of codes any assistance would be greatly appreciated.
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,658 Posts
Hello, so here are the codes I got.

Body Codes:
B0248 - Mode Door Inoperative Error (C-Current)
B0419 - Air Mix Door #2 Range Error (C-Current)
B0429 - Temperature Control #3 Rear Circuit Range/Performance (H-History)
B1004 - Keep Alive Memory (KAM) (H-History)

Chassis Codes:
C1295 - Brake Lamp Switch Circuit Open (H-History)
C1298 - PCM Class 2 Serial Data Link Malfunction (H-History)
C0660 - Level Control Exhaust Valve Circuit Malfunction (C-Current)

Network Codes:
U1064 - Loss of Communications with DIM (H-History)
U1016 - Loss of Class 2 Communication with VCM (H-History)

I know it's a lot of codes any assistance would be greatly appreciated.
=========================
B0248 - Mode Door Inoperative Error (C-Current)
OK - you need to replace the MODE door actuator - this controls WHERE the air blows from -
this is the hardest one to replace - but doable from up under the dash -

ACDELCO 15-72654 - $53 - with free shipping -

I recommend replacing the driver MIX door actuator at the same time -
you remove it to do the MODE door actuator - so the labor is already done -
ACDELCO 15-72974 - $58 - with free shipping -

here is a HowTo - including pics and suggested tools that will make the job easier -

also read these posts - they include more tips and short-cuts - pay particular attention to #21 -

-----------------

B0419 - Air Mix Door #2 Range Error (C-Current)
B0429 - Temperature Control #3 Rear Circuit Range/Performance (H-History)

now for the GOOD news -
BOTH of these problems will be fixed by replacing the PASSENGER side MIX door actuator -
AND - this is the easiest one to replace by removing the glove box assembly -

ACDELCO 15-73428 - $65 - with free shipping -
Amazon.com: ACDelco 15-73428 GM Original Equipment Temperature Valve Actuator Assembly: Automotive -

here is a HowTo - with pics -

SPECIAL NOTE -
when removing the surround trim - pull STRAIGHT BACK - DO NOT PULL DOWN -
or you'll break the plastic tabs that hold it in place -

------------------------

if you replace these yourself - you'll be rewarded by saving around ONE THOUSAND DOLLARS -
compared to what the dealer will charge for the same parts -

-----------------------

C0660 - Level Control Exhaust Valve Circuit Malfunction (C-Current)
this usually points to a failed part in the ELC - Electronic Level Control air compressor -
the solution is to replace the compressor -
$146 - with free shipping -

I also recommend replacing the rear air-assist shocks at the same time -
MONROE MA822 - $70 - for the PAIR - with free shipping -

SPECIAL NOTE -
Amazon also shows a "used" set for $52 -
these are actually brand new - never installed - but the box is beat-up -
possibly a customer return - and saves you another $18
 

·
Registered
Joined
·
4 Posts
Discussion Starter #6
Thank you for the feedback, will my AC work properly without fixing theses two parts below?

C0660 - Level Control Exhaust Valve Circuit Malfunction (C-Current)
this usually points to a failed part in the ELC - Electronic Level Control air compressor -
the solution is to replace the compressor -
$146 - with free shipping -

I also recommend replacing the rear air-assist shocks at the same time -
MONROE MA822 - $70 - for the PAIR - with free shipping -
 

·
Registered
2000 Deville Base, 2019 Corvette Grand Sport
Joined
·
1,061 Posts
YES. They have nothing to do with your ac problem but you still need to change the actuators for the ac to work properly.
 
1 - 8 of 8 Posts
Top