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2014 Buick LaCrosse with e assist. Won't start unless jumped or onboard jump assist. Drives fine once started. Local battery dealer says the battery is fine.

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Is this a random issue or is it a constant (every time) type of problem ?

May have a wiring problem which is random.

Posted on Dec 23, 2016

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Jump starting a Buick Lacrosse 2005


Jump starting
If your vehicles battery has run down, you may want to use another vehicle and some jumper cables to start your vehicle.
1.Check the other vehicle. it must have a 12-volt battery with a negative ground system.
2.Get the vehicles close enough so the jumper cables can reach, but be sure the vehicles are not touching each other. If they are, it could cause a ground connection you do not want. You would not be able to start your vehicle, and the bad grounding could damage the electrical systems.
3.Turn off the ignition on both vehicles. Unplug unnecessary accesories pluged into the cigarrete lighter or the accessory power outlets. Turn off the radio and lamps that are not needed. This will avoid sparks and save both batteries. And it could save the radio.
4.Open the hood on the other vehicle and locate positive (+) and the negative (-) terminal locations on that vehicle. You will not use yours vehicles battery for jump starting. It has a remote positive (+) jump starting terminal, located on the underhood fuse block, for that purpose.

on Oct 08, 2010 | Buick LaCrosse Cars & Trucks

1 Answer

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.
  • Buick LaCrosse Recalls DealerRater

    May 23, 2016 | Buick Cars & Trucks

    1 Answer

    Battery & alternator both good, but wont start without jump off, atleast once a day.


    Your battery will not be "good" if you can jump start the car from another power source. If it is a 2014 model it will be the original battery.

    Unless you have tested the cold cranking amps the battery is producing you cannot say if it will turn the starter motor or not. A good battery would kick the starter motor over. If you can jump start the car by connecting another power source to the battery terminals it will not be a wiring issue either.

    If it's a 2014 it should still be covered by new car warranty (but not if the problem is just a failed battery which is subject to the applicable battery warranty)./

    Jan 14, 2016 | 2014 Ford Fusion

    1 Answer

    Does a Buick lacrosse jump start itself


    No. It won't jump start by itself. You should push it behind to get it started.

    Oct 29, 2015 | Buick Cars & Trucks

    1 Answer

    2004 buick rendezvous loses power after jump starting, while engine idlies battery power dies. Unable to restart again unless I jump start. Also, battery light comes on. Battery was replaced 5/28/13.


    Sounds like the alternator. A jump can start you but if the alternator is bad your battery will not charge and just die after you use the power you got from the jump.

    Aug 04, 2013 | 2003 Buick Rendezvous

    1 Answer

    98 Buick Regal won't run unless hooked for a jump.


    you may have a bad ground, or the ignition switch needs to be replaced.

    Jul 28, 2012 | 1998 Buick Regal

    1 Answer

    Went to the mall and got back to car and car wouldn't start. Had to call roadside assistance for a jump. Got home, turned car off and car won't restart. No interior lights.


    Sounds like a dead battery, the fact that you were able to drive it all the way home after being jump started means that your alternator is working fine, but as soon as you turned it off there is no way to restart it since the battery is bad. Take out the battery and go have it tested at your local auto parts store to be sure, but that is most likely the cause.

    Aug 14, 2011 | 2008 Lincoln MKX

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    Won't hold a charge


    its the battery. the battery holds the charge and the alternator charges it so when you jump the car it stays running because you alternator is providing power when you shut the car off you have a bad battery that isnt holding the charge needed to start it again.

    Mar 31, 2009 | 2003 Buick Rendezvous

    1 Answer

    2008 Buick Lacrosse, wiper delay problem


    Sounds to me like a weak windshield wiper motor.  My 92 sable did this.  Replacing the motor solved the problem.  

    Mar 05, 2009 | 2007 Buick LaCrosse CXL Sedan

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