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

carl609 · 01-09-2006, 02:12 AM

I have a 67 gmc. When I turn on the headlights, the dash lights don't work and the gas gauge goes to below empty. the high beam indicator comes on and the left turn indicator does also. All of the exterior lights work. Is this something anyone has seen. I was figuring it was the headlight switch.

MDC · 01-09-2006, 03:10 AM

I've never seen it, but I would check the printed circuit board on the back of your cluster. Make sure it's not burned somewhere. The PCB is the only thing the lights and gauge have in common since the gauge doesn't run through the switch.

BTW Welcome from N Texas

wibilly · 01-09-2006, 03:25 AM

could possably be a ground problem

cdyblu · 01-09-2006, 03:48 AM

I agree with Wibilly, sounds like a ground problem to me.

krue · 01-09-2006, 04:34 AM

Grounds are almost always a problem on these trucks.

Longhorn Man · 01-09-2006, 06:36 AM

There are two possabilities,
1. Bad ground on inst panel.
2. an inst panel with accessory guages, on a truck wired for dummy lights.

Honestly is kinda sounds like the latter to me, however, make yourself a ground from the 'tin' on the back of the inst panel to the dash and see what happens.

01-09-2006, 02:12 AM	#1
carl609 Registered User Join Date: Jan 2006 Location: Lynnwood, WA Posts: 63	common problem? I have a 67 gmc. When I turn on the headlights, the dash lights don't work and the gas gauge goes to below empty. the high beam indicator comes on and the left turn indicator does also. All of the exterior lights work. Is this something anyone has seen. I was figuring it was the headlight switch.

01-09-2006, 03:10 AM	#2
MDC Registered User Join Date: Oct 2005 Location: N Texas Posts: 727	Re: common problem? I've never seen it, but I would check the printed circuit board on the back of your cluster. Make sure it's not burned somewhere. The PCB is the only thing the lights and gauge have in common since the gauge doesn't run through the switch. BTW Welcome from N Texas __________________ 67 C10 Shortbed 327 05 F150 4x4 NO APPOLOGIES 's 02 Xpress X19 02 Yamaha VMax 150 www.xpressboats.com Nothing says 'poor craftmanship' like wrinkles in your duct tape Last edited by MDC; 01-09-2006 at 03:11 AM.

01-09-2006, 03:25 AM	#3
wibilly Senior Member Join Date: Nov 2005 Location: northwestern wi Posts: 2,111	Re: common problem? could possably be a ground problem __________________ common sense isn't so common anymore

01-09-2006, 03:48 AM	#4
cdyblu Registered User Join Date: Dec 2004 Location: Green Bay, WI Posts: 44	Re: common problem? I agree with Wibilly, sounds like a ground problem to me.

01-09-2006, 04:34 AM	#5
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Re: common problem? Grounds are almost always a problem on these trucks. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

01-09-2006, 06:36 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: common problem? There are two possabilities, 1. Bad ground on inst panel. 2. an inst panel with accessory guages, on a truck wired for dummy lights. Honestly is kinda sounds like the latter to me, however, make yourself a ground from the 'tin' on the back of the inst panel to the dash and see what happens.

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