Question about 1998 Cadillac DeVille

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1998 cadillac deville electronic leveling control system isn't working on the driver side but on the passenger side.

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SOURCE: 1999 cadillac Deville cold air blowing out passenger side vents

Sounds like a Blend door issue, but could be the controller switch, Test ALL modes of operation to see what works and what does not. That should narrow it down a bit. The Blend doors are flap/ doors that regulate air flow, newer vehicles are plastic - electric assemblies ...prone to failure. Any clicking or thumping noises during switching modes and on-off suggest a bad Blend door. Hope that helps...good luck

Posted on Jan 12, 2009

  • 109 Answers

SOURCE: 1998 cadillac deville

try taking off your fuse panel cover, there should be a reset button in there.

Posted on May 06, 2009

  • 834 Answers

SOURCE: electronic level control not working right

To begin with, check the "ride level" fuse and make sure that the ride level compressor does work, and you should be able to hear that the ride level compressor is working when the ride level system is leveling the vehicle.

The ride level system uses an air compressor and either an air type of shocks or a type of air billow to raise and lower the vehicle, there is an adjustment to set the ride height and it is located under the vehicle and there is a control lever or rod that should be connected between the rear axle and a switch that is mounted on the body of the vehicle, and there will be an adjustment slot in the control lever between the switch and the body, and that is how you would adjust the ride level height, but be sure that the vehicle can not drop any further down if someone is under the vehicle trying to adjust the ride height.

However, you might find that the control lever to the ride level has fallen off from the switch on the body or it has come loose from the rear axle, and it is just hanging there not operating the switch on the body that controls the the ride level compressor, or there might be a blown out air shock or billow, or you might find that an air line from the compressor is leaking and the ride level compressor will just run continuously until it blows out the fuse, and if that is the case you might also find out that the air compressor has burned out from running continuously.

Posted on Jun 12, 2010

  • 1 Answer

SOURCE: 1998 Cadillac Deville low refrigerant a/c

I have a 1999 Cadillic Deville. The low Frefrigerant indicater come on after about 15 minutes of disconnecting the battery power. Each Time I reset the power the air conditioner comes back on for a while then goes out. I have taken it into the local auto repair place and they find no problem with the unit.
Could this be a intermittent connection to the computer. They have replaced both sencors and the problem persists. Where is the computer located on the car that handles this AC sensor message?

Posted on Jul 14, 2010

bluebirdmate
  • 1190 Answers

SOURCE: No Heat Passenger Side. I

Hello: You have a failed temperature control actuator for the passenger air mix door. Remove the glove box and the close out panel under the dash on the passenger side. You will see two silver rods going from the actuators (mounted on the top and bottom of the heater/a/c programmer) Turn key on (engine off) Turn the a/c heater control on. Go from 60 to 90 or 90 to 60 and watch the rods the one that doesn't move is the failed one. The actuator is held in place by two 7mm screws and one electrical connector. When installing the new actuator have the temp set at 60 when you hook up the linkage. The passenger side set at full cold.

Posted on Nov 17, 2010

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Got a1997 cadillac deville got heat on passengers side no heat on drivers side could you tell me the problem.no defrost on drivers side either help please


DTC B1340 Air Mix Door #1 Movement Problem !
The heater and A/C programmer supplies voltage to an internal motor that drives the air mix door. The heater and A/C programmer monitors the air mix door position feedback from a sensor on the motor. If the air mix door is requested to move but the feedback voltage does not change, the heater and A/C programmer will store DTC B1340. If the air mix door feedback indicates that the feedback is near the hot or the cold extreme, the DTC will not set. Evaluate the operation of the air mix door through self diagnostics as described in the test description.
Test Description
Perform the Diagnostic System Check before continuing with the diagnosis of this DTC.
A Scan Tool allows for the direct control of the air mix door by observing the following conditions:
• The air mix door position feedback value
• The value`s difference from the air mix door commanded position value
These readings indicate a fault internal to the heater and A/C programmer in the air mix door sensor feedback.

Did you perform the Diagnostic System Check?
--
Go to Step 2
Go to Diagnostic System Check
2
With the engine running, connect a Scan Tool .
Turn the dual zone to OFF (passenger temperature offset at 0 or OFF).
Exercise the suspect actuator using the temperature control on the control assembly.
Is the door being commanded (COM) to the proper high and low values?
COM High 100 %
COM Low 0 %
Go to Step 3
Go to Step 4

If you are unfamilier with this , i suggest you take it to a ASE certified repair shop or the dealer .

Jan 25, 2016 | Cadillac Cars & Trucks

1 Answer

Cadillac air condition


The passenger side air temp control has a problem. Check connections at switch. If you have a volt meter you can check the switch for continuity or ohms of resistance. No continuity, replace switch.

May 10, 2014 | 1998 Cadillac DeVille

2 Answers

1998 cadillac deville instrument cluster lights don't work


Hello: Check the fuses in the fuse box under the hood, drivers side also check the fuses in the trunk fuse panel on the drivers side. If the tail light fuse is open that will keep the instrument lights out also.

Oct 08, 2011 | 1998 Cadillac DeVille

1 Answer

My 2005 Deville, with the Air Conditioner on, blows cold air on the Drivers side but hot air on the passenger side. Replaced the Blower on the passenger side but that did not correct the problem. What...


The selector doors are the problem. There are doors in almost all air systems on almost all vehicles that are either electronically controlled or vacuum controlled. These doors can wear out, break, servo motors go bad, there are a number of issues that control the doors but usually its the cheap plastic shaft on the door that strips out and no longer works. Blower motors are rarely to blame. Although these doors are simple in construction and can be easy to fix, getting to them is a whole other issue. You have to tear your whole dash and air box apart. Not fun, but its gotta be done.

May 06, 2011 | 1995 Cadillac DeVille

1 Answer

My heater blows hot on the passenger side, and cold on the drivers side.


gm cars in this era, used two different electronic motor boxes for the hvac vent doors, they are located on both sides of the heater box. one on the passenger, and drivers sides, just under the dash. one on the left/drivers side will control the hot/cold, while the passenger/right side will control the def/vent/floor. the plastic gears inside them get hot and crack, causing them to get stuck in certain positions. only way around this is to replace the left side one.

Jan 06, 2011 | 1991 Cadillac DeVille

1 Answer

I HAVE A 1998 CADILLAC DEVILLE THE A/C/ WENT OFF AND THE COMPRESSOR WENT OFF HOW DO I RESET BOTH..


OK, if the A/C system has been discharged of R134a for any length of time, the car may have to be reset by disconnecting the battery and reconnecting after a few minutes.

That's the way my 1990 Cadillac Deville is, as it's a safety measure for preventing low freon level operation of the compressor which can damage the compressor.

My 1997 Cadillac Deville Limo hasn't had any leakage issues, so I don't know if this would work on that late of a Cadillac.

After adding r134a to the low side, and if the compressor doesn't work, then this could very well be your problem.

Good luck on this repair.

Sep 16, 2010 | 1998 Cadillac DeVille

1 Answer

1998 DeVille: 1999 cadillac deville drver side heat blows hot pa...


The blend door for the passenger side is not connected right or functioning correctly. Try seeing if the dial on the armrest on the passenger side is not rotated one way or the other too much.

May 15, 2010 | 1998 Cadillac DeVille

1 Answer

No heat on passenger side and warm air on drivers side


heater radiator blocked or partially blocked,drain antifreeze and save ,remove the inlet and outlet pipes for teh heater and flush in both directions repeatedly .brown rust should come out,if not a lot comes out then fit two pieces of pipe about a foot long to heater unit pipes and mix some caustic soda and pour in one pipe with a funnel till it comes up in other pipe leave for a while then flush again and you might need to repeat this two or three times

Dec 16, 2008 | 1998 Cadillac DeVille

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