Brake lights and turn signals don't work on my 85 gmc

70

Asked by Nov 30, 2015 at 09:54 PM about the 1985 GMC C/K 10

Question type: Maintenance & Repair

I have an issue with my brake and turn
signals the front left works but the front
right and rear don't, as for the brakes no
power going to brake  switch. I changed
switch and flasher.checked under dash
connect ion get power through both ends
  checked tail gets power through socket ,
but doesn't blink when turn signal on
,also checked harness for trailer hookup
and it flashes through the pigtail .so I'm
scratching my head. Any suggestions
tried to troubleshoot.

6 Answers

I really hesitate to say this, gearheadnard321, you strike me as somebody that knows what they are doing. You have done all the right things. But you don't mention bulbs.

2 of 2 people found this helpful.

I sized them up as much as possible and keep focus

2 of 2 people found this helpful.

click image for full screen

2 of 2 people found this helpful.
70

Thanks FordNut. I forgot to mention I checked and changed turn signal bulbs had an extra pack of 1156 in my tool box .as for the front I swapped right to left and it seems to work fine .

1 of 1 people found this helpful.

Sorry man didn't mean to insult you. One more

2 of 2 people found this helpful.
70

No insult taken .the more information I retrieve the better the strategy to diagnose and fix.thanks again

1 of 1 people found this helpful.

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