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1993 Buick lasabre when I start my car the heating display numbers flash repeatedly. My heat is working fine what is this and how do I get it to stop

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Whenever this warning light or any other stays on in the dash it is indicating that the systems control module (or the system sensor in the case of lights like low oil pressure, door open indicators etc.) has detected a fault, it then disables the system (this applies to ABS,TCS, TCM, SRS and BCM faults and others) as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)

Legend of Abbreviations. ABS Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module

Posted on Oct 25, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: 1993 Previa heat doesn't work

If there is a leak in the watercycle and the water level drops below a certain level the heating will not work.
The solution is to detect the leak and to replace the relevant problem part.

Posted on Oct 06, 2008

  • 1 Answer

SOURCE: My heater fan won't turn off when car is off 88 Buick Lasabre?

I have the same problem on a 1988 lesaber Climate control and was told to change the climate control as the was the problem. A have the climate control but have a problem to take of the cover that covers the control and the radio. If any one can tell me how to remove it I will put in the new control and see if that will stope the fann.Thanks

Posted on Mar 09, 2009

dgfisher2004
  • 6 Answers

SOURCE: my 1993 corvette over heats at every stop and in

This could be cause by a variety of problems such as low coolant, bad water pump, head gasket leak, manifold leak, malfunctioning fan clutch, broken electric fan, etc etc.

If you have an electric fan, it is designed to turn on triggered by a temperature sensor located near your top rad hose mounting on the intake manifold. If this sensor is broke you will over heat without the fan kicking in at stops. Same with a clutched fan. Could be not moving enough air at a stop.

Check your coolant levels and let your vehicle run while watching to be sure your fan kicks in. Keep your fingers away from it while running. It can start up anytime. If all is well, you may have a plugged rad or restricted rad.

Posted on Jun 30, 2009

  • 3 Answers

SOURCE: 1993 buick laSabre running fine then allof sudden will not start

I realize you may have already solved this but, this happened to me also in July...

I had to have it towed... a jump wouldn't work (battery was fine).

It was the...

ECM: Electronic Control Module
or
ECU: Electronic Control Unit

From repairpal.com: The vehicle's engine control unit (ECU) is a computer that receives information from sensors in the engine. The computer processes this information and makes calculations to control ignition timing, fuel-delivery parameters, engine idle speed, and pollution emitted from the vehicle. The control unit interacts and makes mutual decisions with systems throughout the vehicle. On newer vehicles, the ECU may also control the engine cooling fans, cruise control, and AC Compressor.

They told me they hooked it up to another one to confirm that's what it was. I think they said the fuel pump was working, but the signals weren't getting through (?). I'm guessing they only had to connect one of those diagnostic OBD things to it.

Anyway, they showed it to me, it was a small motherboard about 4x6 inches in a small black holder. He said the part alone cost about $400, but I've not been able to confirm this on the web to see how badly I got ripped off. When your car is sitting dead as a bug in someone's repair shop, and you are helpless as to how to fix it, unless you can afford to have it towed to multiple places, well, you gotta go with what they tell ya. Every place I check on the web for this make/model of ECM says "call for price".

Perhaps I got ripped off for $400 for the part, but I wouldn't know how to put it in regardless.

Anyway, that's why the car was dead as a doornail despite the battery and other things being fine. No information was getting through because the control module was dead.

I'm not saying this is/was your problem, but it may have been.

Posted on Aug 30, 2009

  • 1 Answer

SOURCE: GM '97 Buick Le Sabre Climate Control flashing display

I did the exact thing with my '98 buick LeSabere. I am certain that the dealer would have to look at the components and relays and fuses. I had problems with Precision tune mechanics telling me there is nothing wrong with the electrical system, even though I still get a Flashing temp gauge and do not get FULL heat even when it's blasted to 90ºf . [Precision Tune got heat on the windshield and floor.] Moreover, the car is possessed with glitches; I am not getting heat on the windshield and the floor is not hot enough to warm the cabin.

Posted on Dec 16, 2009

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