Question about Buick Cars & Trucks
Probably the HDM - headlamp driver module .
The headlamp driver module (HDM) is an electronic module that provides electrical power to the vehicle low beam headlamps. The HDM is controlled by a pulse width modulated (PWM) ground signal from the body control module (BCM). The BCM determines the desired lamp intensity using the ambient light sensor, multifunction switch and the park brake switch as inputs. In general, the HDM will operate in 1 of 3 modes:
• Reduced Intensity Mode: This mode is used by features that do not require or allow maximum low beam headlamp intensity such as daytime running lights (DRL) (nominal: 85% duty cycle).
• Full Intensity Mode: This mode is used by features that require full low beam headlamp intensity such as low beam headlamp operation in manual or auto modes (nominal: 100% duty cycle).
• Off Mode: This is the default mode of the system that will occur when none of the features described above are active. The BCM will deactivate its PWM output (0% duty cycle) during this mode.
HDM is a relay located in the under hood fuse box . #46
Posted on Jul 12, 2019
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Are you still looking for help with replacing headlights for 2005 VW.
If so , I have to replace mine tomorrow , I can photograph the process if that helps..
Posted on Mar 10, 2009
Hi. the air filter is in a cylindrical looking device that is connected to the intake throttle body, via plastic flex hose. it runs horizontal. you will have to un clip the plastic housing and extract the filter. i will post a picture below.
Posted on May 22, 2009
Most vehicles are equipped with Halogen bulbs that are small bulbs that are replaced from under the hood behind the headlight bezel assembly.
They have a twist turn method generally to remove/replace hiowever they cannot have your hand come in contact with the glass bulb as the oils on your skin will in fact reduce the halogen bulbs life as it gets extremely hot burning the oil off the lense shortening the bulbs existence.
Remember to replace the bulb with the proper bulb as you may find two or three different applications of halogen bulbs for the same vehicle, they all have a purpose, they go from bright to brighter to brighter each increase in candle power also increases in price of the bulb, a typical standard priced Halogen is approximately $9.95 and up.
Posted on May 09, 2010
The ac system has to be reset,removal of the fuse for the ac,will do this,leave it out for about 10 seconds then replace it,removal of the negative battery cable will most likely do it,but,the computer for the vehicle might loose it`s memory if you do this,unless you have had the battery out before,and know that it will not,after reseting the ac system,have the ac gauges put on the car,and see what the readings will tell,there is a problem there somewhere or the ac system would not shut down,the system while not running,it is hard to tell if there is enough freon ,or not,but check it with the gauges to tell for sure what the problem is.
Posted on May 28, 2010
Tips for a great answer:
Oct 06, 2018 | Buick Cars & Trucks
Aug 22, 2018 | GMC Cars & Trucks
Jun 27, 2016 | 2004 Buick Rainier
Jun 09, 2016 | 2004 Buick Rainier
Mar 25, 2014 | 2005 Buick Rainier
Nov 17, 2011 | 2005 Buick Rainier
Apr 24, 2011 | 2005 Buick Rainier
Mar 13, 2011 | 2005 Buick Rainier
Oct 17, 2010 | 2005 Buick Rainier
20 people viewed this question
Usually answered in minutes!