Brake Lights and turn signals - The 1947 - Present Chevrolet & GMC Truck Message Board Network

houghda · 08-06-2007, 06:02 PM

Got a 67 GMC with a small issue. The brake lights work. The turn signals work. The brakelights do not work when the turn signals are in use. Obviously one would blink, but the other should light. My experience would say replace the switch in the column. Any better ideas?

zeeklu · 08-06-2007, 06:10 PM

I agree,probably the turn signal switch. I had the same problem. Chris

houghda · 08-06-2007, 06:13 PM

can I ask...where is the best place to buy switch (on the east coast)?

Longhorn Man · 08-06-2007, 06:31 PM

any parts store should have it. Make sure to check for an adapter in the box with the new switch.

Longhorn Man · 08-06-2007, 06:32 PM

Correction... any parts house should BE ABLE TO GET IT.

Robert1970C20rstbukt · 08-06-2007, 06:32 PM

First make sure the bed is grounded to the frame good. I had the same problem, all I did was add a ground strap from the bed to the frame and that fixed it.

Longhorn Man · 08-06-2007, 07:23 PM

good idea... highly unlikely being the ground will support the load of both brake lights being on... not likely to only be able to support one steady burn and oone on and off burn... but, it CAN happen.

**68 Stepside** · 08-06-2007, 07:28 PM

First thing that came to mind here is turn signal switch. My 67 panel did the EXACT same thing.

**truckdude239** · 08-06-2007, 07:52 PM

http://www.manestruckparts.com/store...&Category_ID=8

here is an oe replacement i used one for advance auto and it has the new hazard button and i hate it

GMCMAX · 08-07-2007, 12:05 AM

Squirt WD40 or similar in the gap under the steering wheel to column to get to the t/s switch, work the switch fast back and forth a bunch: the old grease and stuff will break up and the contacts can connect.
Done this on the 68 a few times...
Easier than a switch replace and a lot cheaper too.....
Max

houghda · 08-11-2007, 03:22 PM

Thanks guys
It was the switch...............
Grounded the Bed first, glad I did.

08-06-2007, 06:02 PM	#1
houghda Registered User Join Date: Jul 2007 Location: Maryland Posts: 12	Brake Lights and turn signals Got a 67 GMC with a small issue. The brake lights work. The turn signals work. The brakelights do not work when the turn signals are in use. Obviously one would blink, but the other should light. My experience would say replace the switch in the column. Any better ideas?

08-06-2007, 06:10 PM	#2
zeeklu Registered User Join Date: Dec 1999 Location: Northwest NJ Posts: 746	Re: Brake Lights and turn signals I agree,probably the turn signal switch. I had the same problem. Chris

08-06-2007, 06:13 PM	#3
houghda Registered User Join Date: Jul 2007 Location: Maryland Posts: 12	Re: Brake Lights and turn signals can I ask...where is the best place to buy switch (on the east coast)?

08-06-2007, 06:31 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Brake Lights and turn signals any parts store should have it. Make sure to check for an adapter in the box with the new switch.

08-06-2007, 06:32 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Brake Lights and turn signals Correction... any parts house should BE ABLE TO GET IT.

08-06-2007, 06:32 PM	#6
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Re: Brake Lights and turn signals First make sure the bed is grounded to the frame good. I had the same problem, all I did was add a ground strap from the bed to the frame and that fixed it. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

08-06-2007, 07:23 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Brake Lights and turn signals good idea... highly unlikely being the ground will support the load of both brake lights being on... not likely to only be able to support one steady burn and oone on and off burn... but, it CAN happen.

08-06-2007, 07:28 PM	#8
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	Re: Brake Lights and turn signals First thing that came to mind here is turn signal switch. My 67 panel did the EXACT same thing. __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

08-06-2007, 07:52 PM	#9
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: Brake Lights and turn signals http://www.manestruckparts.com/store...&Category_ID=8 here is an oe replacement i used one for advance auto and it has the new hazard button and i hate it __________________ 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

08-07-2007, 12:05 AM	#10
GMCMAX Active Member Join Date: Jan 2006 Location: Lower Mid-East Ca. Posts: 326	Re: Brake Lights and turn signals Squirt WD40 or similar in the gap under the steering wheel to column to get to the t/s switch, work the switch fast back and forth a bunch: the old grease and stuff will break up and the contacts can connect. Done this on the 68 a few times... Easier than a switch replace and a lot cheaper too..... Max __________________ Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4".

08-11-2007, 03:22 PM	#11
houghda Registered User Join Date: Jul 2007 Location: Maryland Posts: 12	Re: Brake Lights and turn signals - FIXED!! Thanks guys It was the switch............... Grounded the Bed first, glad I did.



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