Question about Buick LaCrosse
Posted by Anonymous on
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Posted on Jan 02, 2017
Does the compressor run steady, cycle on and off continually or even come on at all? If cycles on-off then attach charge manifold/gauge set and bring freon up to proper level. If does not come on at all, then start engine, turn a/c on, remove two-wire plug from low pressure cut-out switch mounted on accumulator. Jumper the wires at plug and see if compressor comes on. If so, bring freon up to proper level.
If charge level was low then check for system leak after system charge with an electronic leak detector if available.
If compressor runs but doesn't cool vehicle then with engine running and a/c on feel (carefully) the lines. High side line should be hot (be careful) and low side line should be cold. If these are both true then it's possible non-cooling condition is due to air temp diverter door not operating or heater valve not shutting off (if so equipped). If low side not cold it could be a plugged orifice tube. If high side not hot it could be bad rings on compressor. Both conditions can be diagnosed with a/c manifold gauge set by noting the pressures.
For safety... if not familiar with differences between hi and low side components or with charge equipment then please take vehicle to qualified person for service.
Posted on Jun 22, 2009
Both my remotes no longer work. I will be ordering new ones off Ebay and having my dealer program them. New ones from Buick are very pricey.
Posted on Oct 20, 2009
Hello! There is a Service Parts Identification sticker located either in the glove box or near the spare tire with a list of three alphanumeric codes...If the sticker has "AP3" that means your Buick has remote start...
Posted on Apr 30, 2012
I have a buick lacrosse and it wont crank it not saying anything everything woorks in the car but when i try to turn it over nothing happens
Posted on May 06, 2012
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Sep 28, 2016 | 2006 Buick LaCrosse CXL
Aug 23, 2015 | 2008 Buick Lacrosse
Nov 21, 2013 | 2005 Buick LaCrosse
Nov 13, 2012 | 2010 Buick LaCrosse
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.
Sep 27, 2012 | 2007 Buick LaCrosse CXL Sedan
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Oct 14, 2009 | 2005 Buick LaCrosse
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