2001 Other Chevrolet Models Loss of headlights

Tiny
DIGGINSJP
  • MEMBER
  • 2001 CHEVROLET
  • 4 CYL
  • FWD
  • MANUAL
  • 243,000 MILES
2001 Chevy Prism lost headlights. Please help!

Good morning, my Prism after many years and many miles of faithful service recently lost the ability to turn on the headlights. I discovered that with the headlights off, the DRL lights will work for about 20 seconds after the car starts and then they turn off.

My local garage diagnosed and changed the headlight switch (which required removing the steerling wheel and airbag). This did not initially cure the issue but the technician noted that the issue with the headlights was that they were not getting ground. (We also put a new battery in the vehicle). However, the simple act of hooking up his meter from the column to one of the headlamps directly magically cleared the problem. Perhaps the ECM got a reset from this?

After paying my $250 for the new part, new battery and labor, I drove the car for about a month without issue until the other night; I turned the car off while picking up dinner and when I retruned to the car, the headlights were again gone. I was able to drive home with the DRL lights on for 20 seconds at a time :-(

Not sure what to do next but this vehicle still gets 40 mpg and has no rust. I'd hate to have to get rid of it.

Thank you for any help you can provide.

jim diggins
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Wednesday, January 7th, 2009 AT 8:46 AM

3 Replies

Tiny
SERVICE WRITER
  • EXPERT
No reason to get rid of it. I would start with the easiest way. Call the shop that worked on it. Ask them to look over the work they did as the problem is present. My guess is the ground problem is still present and by moving the connection last month it may have temporarily fixed it.
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Wednesday, January 7th, 2009 AT 8:20 PM
Tiny
DIGGINSJP
  • MEMBER
In follow-up, is there an overview of the ground paths that should be suspected?

How does one search out the interaction of the Daytime Running Light module to ensure signalling and ground to the ECM can be proven good as well?

What elements of the fuse headers/fuse boxes are involved and what about a "grounding buss" under the drivers floor-board I've seen mentioned on other search results?

Thanks,
-jim diggins
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Friday, January 9th, 2009 AT 7:59 AM
Tiny
SERVICE WRITER
  • EXPERT
Let me get some diagrams up.


http://www.2carpros.com/forum/automotive_pictures/30961_pri2_1.jpg




http://www.2carpros.com/forum/automotive_pictures/30961_pri1_1.jpg



I'll email them if you can't read it.


http://www.2carpros.com/forum/automotive_pictures/30961_prigd1_1.jpg



http://www.2carpros.com/forum/automotive_pictures/30961_prigd2_1.jpg

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Saturday, January 10th, 2009 AT 9:46 AM

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