Question about 2007 Buick LaCrosse CXL

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Need engine diogram for 2007 buick lacross 3800 , po128 (ect)

Posted by hardycook on

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Stephen

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  • Buick Master
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The code is telling you the engine temp sensor is telling the computer the engine is not warming up as it should.
Sometimes the problem is the thermostat, or low coolant, and sometimes it is the temp sensor.
Check the engine temp with an inferred thermometer first.
Usually the engine temp sensor is a two wire sensor, yellow and black.

Posted on Sep 03, 2012

  • hardycook
    hardycook Sep 04, 2012

    thanks stephen for your responce on the buick lacrosse. also need some help with location of po411 and po128 on buick lacrosse 2007.7d

  •  Stephen
    Stephen Sep 04, 2012

    Code 411 is a problem with the air injection system for the smog pump, and code 128 you already have the info on.

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5 Related Answers

JOHN LAPIER

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SOURCE: 2002 Buick engine code PO128

ECT engine coolent tempature sensor in the water jacket frint of engine near top radiator hose

Posted on Nov 14, 2010

Testimonial: "Thank you helped alot"

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phoenixinks

Jason Robertson

  • 89 Answers

SOURCE: Emissions light - 2007 Buick LaCrosse

sounds like you are having an o2 sensor problem. have that particular part looked at

Posted on Mar 03, 2009

honeymokey

honeymokey

  • 3113 Answers

SOURCE: buick 3800 wont start help

Change plugs check wires for correct connection. Check pcv for vacuumn leaks. Starter fluid on mass air flow meter may damage it.

Posted on Oct 03, 2009

Testimonial: "100%"

Anonymous

  • 566 Answers

SOURCE: how do I compress the rear brake piston on 2007

hi from uk most rear brake calipers have auto adjust mechanism and yours may be the same as on uk models whereas to compress the piston back into caliper to facilitate fitting new pads ? you have to both press and rotate piston and this sends piston back on the screw auto adjuster you will notice that piston has a couple of slots on its head ? this is there for enabling screw back having said this there is a rear caliper piston compress tool that does this job and the cheapest tool and good quality is made by draper tools and costs approx £10 in uk but can be obtained at any good auto stores and has instructions on use well worth the investment ? just one tip pistons normally screw back clockwise however! on fiats? the nearside screws anticlockwise so just observe that piston is going back when rotating c/wise if not you can fit a 3/8" drive extension and t bar to the rotator boss and using pressure ?turn piston a/clockwise hope this helps one word of advice !make sure you bleed brakes afterwards to clear out dirty fluid untill clean fluid shows this will improve brake pedal best wishes from uk

Posted on Mar 23, 2010

NOT ME

  • 2841 Answers

SOURCE: I need a serpentine belt

It should be under the hood on a placard. If not someone has removed it. In that case here it is. a096361.png

Posted on May 01, 2010

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How much does it cost to repair a HDM module on a 2007 Buick lacrosse


  • Subject of a RECALL so free
  • http://www.dealerrater.ca/recalls/Buick/LACROSSE/
  • 2007 Buick LaCrosse Recall Item Affected: EXTERIOR LIGHTING: HEADLIGHTS Date Announced: 08-14-2015 Description of Recall: General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL, 2006-2008 Isuzu Ascender, and Saab 9-7x vehicles. In the affected vehicles, the headlamp driver module (HDM) may overheat and fail, causing the headlamps and daytime running lights to not illuminate. Action Need To Fix It: GM will notify owners, and dealers will replace the HDM, free of charge. Interim notices were mailed to owners on September 2, 2015. Dealers will install a new HDM Service part as an interim repair. Owners will receive a second notice when remedy parts are available. Owners may contact Buick customer service at 1-800-521-7300 or Pontiac customer service at 1-800-762-2737. GM's number for this recall is 14291. FIND YOUR LOCAL Buick Service Centre
  • Buick Lacrosse Fires Caused by Faulty HDM Module? ' R.J ... https://rjhillconsulting.wordpress.com/2014/07/23/buick-lacrosse... 2014-07-23 · On 7/2/15 my 2009 Buick LaCross fuse box caught fire, I have since then learned that it began in the HDM module. There is a Technical Service Bulletin for ...
  • What is a Buick hdm module - Answers.com www.answers.com > ... > Pontiac > Pontiac Grand Prix > Grand Prix SE It is the headlight drive module. It is used for daytime running lights and low beam operation. It works in conjunction with the light sensor on top.

  • Buick Lacrosse Fires Caused by Faulty HDM Module? ' R.J ... https://rjhillconsulting.wordpress.com/2014/07/23/buick-lacrosse... 2014-07-23 · On 7/2/15 my 2009 Buick LaCross fuse box caught fire, I have since then learned that it began in the HDM module. There is a Technical Service Bulletin for ...
  • What is a Buick hdm module - Answers.com www.answers.com > ... > Pontiac > Pontiac Grand Prix > Grand Prix SE It is the headlight drive module. It is used for daytime running lights and low beam operation. It works in conjunction with the light sensor on top.
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    2002 Buick engine code PO128


    ECT engine coolent tempature sensor in the water jacket frint of engine near top radiator hose

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    Emissions light - 2007 Buick LaCrosse


    sounds like you are having an o2 sensor problem. have that particular part looked at

    Mar 03, 2009 | 2007 Buick LaCrosse CXL Sedan

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