weird problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckdude239** · 09-13-2006, 01:48 PM

okay when i turn my headlights on my left turn singal will not flash. with them off everything works perfect. i replaced the turn signal swicth about 3 months ago could a bad headlight switch cause this?

67ChevyRedneck · 09-13-2006, 02:56 PM

Mine does something similar. Everything works fine, but when you turn the lights on to the "park light" my left turn signal light comes on and stays on. I think it's a ground issue with the dash. I have yet to fix mine, but the blinker will work, jut the dash part is messed up.. When I pull the headlights to "on" everything works ok.

67chevy2wd · 09-13-2006, 03:09 PM

Quote:

Originally Posted by truckdude239

okay when i turn my headlights on my left turn singal will not flash. with them off everything works perfect. i replaced the turn signal swicth about 3 months ago could a bad headlight switch cause this?

Is your left turn signal lit up? My car did something like this, everything off it worked fine, when I turned my parklights of my right turn signal was on in the dash. When I turned my headlights on my right side was dim and the signal light was still on, I had a bad headlight ground and it was grounding through the signal light which caused it to turn on.

Jesse72 · 09-13-2006, 03:33 PM

i have a problem where i turn on my lights and the dash loses everything, the gas gauge goes past empty. I beleive it is a ground issue

underdog8704 · 09-13-2006, 04:40 PM

do you guys have any bulbs out in any lights. one of my running lights was out and my signal stayed lit up when the lights were on. once i replaced the bulb it was fine. check all your lights.

centsless · 09-13-2006, 04:58 PM

I have also seen this happen when a turn signal/park light bulb (1157) is installed wrong or the bulb socket is bad. Check the grounds very good. That is the most common cause.

Longhorn Man · 09-13-2006, 05:21 PM

truckdude and67 redneck, replace the tail light and front parking lights... all 4 1158 bulbs, or a 20 57 for brighter brakes/flashers, and see what happens.
The truck is designed to do this when a bulb goes bad. It senses the lack of continuity to the ground, ahnd lights up the indicator. If new bulbs doesn't fix it, then check the grounds (including the sockets) out front and in back.

Jesse72, you do in fact have a very weak ground on your inst panel.

**truckdude239** · 09-13-2006, 05:49 PM

Quote:

Originally Posted by Longhorn Man

truckdude and67 redneck, replace the tail light and front parking lights... all 4 1158 bulbs, or a 20 57 for brighter brakes/flashers, and see what happens.
The truck is designed to do this when a bulb goes bad. It senses the lack of continuity to the ground, ahnd lights up the indicator. If new bulbs doesn't fix it, then check the grounds (including the sockets) out front and in back.

Jesse72, you do in fact have a very weak ground on your inst panel.

1158? i have 1157s in the truck now 2057 are brighter i might get them i'll try that frist

i been having a problem with the rleft rear brake light not working bulb looks good park light works i took it apart and cleaned the ground and got park lights to work and the front stoped working i'll go get bulbs and try that

Longhorn Man · 09-13-2006, 08:53 PM

yeah... 1157 and 2057. If your normal chain type parts store doesn't have them, NAPA should. That's who stocks ours.

09-13-2006, 01:48 PM	#1
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	weird problem okay when i turn my headlights on my left turn singal will not flash. with them off everything works perfect. i replaced the turn signal swicth about 3 months ago could a bad headlight switch cause this? __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

09-13-2006, 02:56 PM	#2
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: weird problem Mine does something similar. Everything works fine, but when you turn the lights on to the "park light" my left turn signal light comes on and stays on. I think it's a ground issue with the dash. I have yet to fix mine, but the blinker will work, jut the dash part is messed up.. When I pull the headlights to "on" everything works ok. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

09-13-2006, 03:33 PM	#4
Jesse72 Registered User Join Date: Jan 2005 Location: Ohio Posts: 171	Re: weird problem i have a problem where i turn on my lights and the dash loses everything, the gas gauge goes past empty. I beleive it is a ground issue __________________ Jesse 72 4x4 Sold 59 GMC air ride ls swap

09-13-2006, 04:40 PM	#5
underdog8704 NCStroker Join Date: Aug 2006 Location: NC Posts: 89	Re: weird problem do you guys have any bulbs out in any lights. one of my running lights was out and my signal stayed lit up when the lights were on. once i replaced the bulb it was fine. check all your lights.

09-13-2006, 04:58 PM	#6
centsless sufficiently talented fool Join Date: Jun 2006 Location: Forest Hill, MD Posts: 2,231	Re: weird problem I have also seen this happen when a turn signal/park light bulb (1157) is installed wrong or the bulb socket is bad. Check the grounds very good. That is the most common cause. __________________ "it's impossible to be surrounded by idiots when you are part of the circle" 2003 Suburban 2002 Pontiac Montana 1981 Corvette 1966 Impala Convertible Click here to support the board

09-13-2006, 05:21 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: weird problem truckdude and67 redneck, replace the tail light and front parking lights... all 4 1158 bulbs, or a 20 57 for brighter brakes/flashers, and see what happens. The truck is designed to do this when a bulb goes bad. It senses the lack of continuity to the ground, ahnd lights up the indicator. If new bulbs doesn't fix it, then check the grounds (including the sockets) out front and in back. Jesse72, you do in fact have a very weak ground on your inst panel.

09-13-2006, 08:53 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: weird problem yeah... 1157 and 2057. If your normal chain type parts store doesn't have them, NAPA should. That's who stocks ours.



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