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Chevrolet Impala Lighting/Electrical Problems
433 messages, Last post on Mar 21, 2013 at 9:44 AM
You are in the Chevrolet Impala Forum.What is this discussion about? Chevrolet Impala, Lights, Electrical, Sedan
#430 of 433 Daytime Running Light circuit goes crazy by bostonbirmy
Dec 10, 2012 (2:12 pm)
I have an 01 Impala purchased new. I have been very pleased...good economy, comfortable, great looks. Recently I have encountered a problem connected with the Daytime Running Lights. When driving daytime with the DRL "on", the entire lighting system, including dashboard lamps will go into rapid oscillation with accompanying noise like the clicking of a relay from the area behind the dash on the passenger side. This occurs when the car passes into shadow, such as that of an underpass. I can simulate same by putting my hand over the photodiode on the dash. There is supposed to be a time delay built into the system so that short passages into darkness do not produce such an effect. Oh yes, if I pull out the headlight switch, the relay noise persists but the lights no longer flash off and on. Driving at night there is no problem. Anyone have this problem or heard about it?
- revjim64 (Dec 11, 2012 10:14 am)
Replies to this message:
#431 of 433 Re: Daytime Running Light circuit goes crazy [bostonbirmy] by revjim64
Dec 11, 2012 (10:14 am)
Replying to: bostonbirmy (Dec 10, 2012 2:12 pm)
Sounds like the symptoms of a faulty BCM (Body Control Module) Your best bet is to have the dealer diagnose this. If the BCM needs replacement you are probably looking at $500-600 dollars. Unfortunately you can not replace this yourself because it requires special programing that involves a computer and typing in your VIN #.
Good luck! Other common problems for this model vehicle is defective high/low beam combination switch. Faulty Passlock sensors, Noisey ISS shaft in steering columnn, intake manifold gasket leaks, and recall on cat converter. Other than that it is a smooth riding car!
#432 of 433 2003 Impala Power to Heater Blower, Cruise Control, and Info Center by scotte67
Dec 31, 2012 (3:18 pm)
I am trying to troubleshoot why my heater blower, cruise control and info center above my rear-view mirror has stopped working. I am trying to confirm power to an orange wire next to the driver-side fuse box. I have confirmed no power at the fuses. I am hoping the problem is the wire box below the fuse box and not the ignition switch. I have a wiring diagram and the power feed to these three fuses is via an Orange wire. There are two Orange wires in the box, I am trying to determine which one feeds the fuses for these three devices. I have a picture of the fuse box. Any help is appreciated.#433 of 433 Re: Impala BCM issues - possible clue [toddhartley] by cat54
Mar 21, 2013 (9:44 am)
Replying to: toddhartley (Jan 16, 2008 1:10 pm)
hey, tony .g. here. working on a 2001 impala(after someone was at it) and did various resetting techs to no avail. car did start once. now i discovered tha it has this BCM and every impal/malibu problem posted that i have read has lead me to this module. todd u have endurance. if this car comes around i will be posting with u in mind. thanks thus far and in fact thanks to all who i now know has chevy BCM problem. have a good one. 
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