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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Pontiac
Satisfied Customers: 3939
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
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07 grand prix no running lights

Customer Question

07 grand prix no running lights
Submitted: 1 year ago.
Category: Pontiac
Expert:  Chad Farhat replied 1 year ago.

Hi, I'm Chad ,Welcome To JustAnswer, I'm reviewing your question and I will be be posting a replay ASAP

Expert:  Chad Farhat replied 1 year ago.

There is a recall on thus issue , dealer should fix for free

The HDM ( Headlight lamp Driver Module ) fails & n eeds replacement


This the Recall below


2007 Pontiac Grand Prix V6-3.8L

Save Article

Report Receipt Date: AUG 14, 2015 NHTSA Campaign Number: 15V519000 Component(s): EXTERIOR LIGHTING Potential Number of Units Affected: 159,584 Manufacturer: General Motors LLC SUMMARY: General Motors LLC (GM) is recalling certain model year 2005 Buick LaCrosse vehicles manufactured May 31, 2004, to June 27, 2005, and 2007 Grand Prix vehicles manufactured April 12, 2006, to April 25, 2007. In the affected vehicles, the headlamp driver module (HDM) may overheat and fail, causing the headlamps and daytime running lights to not illuminate. CONSEQUENCE: Headlamps that do not illuminate reduce the driver's ability to see the roadway and reduce the vehicle's visibility to oncoming vehicles, both of which increase the risk of a vehicle crash. REMEDY: GM will notify owners, and dealers will replace the HDM, free of charge. Interim notices will be mailed to owners on September 2, 2015. Owners will a second second notice when remedy parts are available. Owners may contact Buick customer service at 1-***-***-**** or Pontiac customer service at 1-800-(###) ###-#### GM's number for this recall is 14291. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-***-***-**** (1-***-***-****), or go to

Please let me know if you need anything else on it

Hope I was helpful to you

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This Post Will Stay Open for You To Come back And Ask me Any Follow Up Question You May have.

Thank You

Chad Farhat
ASE Certified Technician

Customer: replied 1 year ago.
I have change hdm module and the multi function switch still doesn't work, I do have headlights brake light turn signals
Expert:  Chad Farhat replied 1 year ago.

did you replace with a brand new module at the dealer or a used one ?

Customer: replied 1 year ago.
used one but when I take it out the headlights go out so does that mean its good
Expert:  Chad Farhat replied 1 year ago.

no it does not , they will go out that what supplies power to them, , all used are defective , unless it is off a used car that has been replaced with a new update part # .

Customer: replied 1 year ago.
there is two sides to the hdm module headlight side and running light side
Expert:  Chad Farhat replied 1 year ago.

yes correct

Customer: replied 1 year ago.
okay ill get a new one
Expert:  Chad Farhat replied 1 year ago.

ok sounds good