right turn signal won't work when lights are on

Asked by Dec 20, 2008 at 10:02 AM about the 1992 Chevrolet C/K 1500 Silverado Standard Cab LB

Question type: Maintenance & Repair

My chevy 1500 right turn signal won't work when lights are on, when I shut lights off it blinks all four blinker lights.  When lights are off and I push brake pedal the parking lights also go on any help on what is going on.

8 Answers

70

I have the same problem except it's the left

7 out of 7 people think this is helpful.
65

you might try checking for a ground wire brokin or loose,or if you have installrd a wireing harnes for a tow behind trailer, try un hooking it see if any change, hope this helps whd-opn.

3 out of 3 people think this is helpful.
505

Hi did you check the wire harness for any bare wire or were the they connected to the front and rear.You have a power feed back from a broken wire or bad connection or a bad bulb socket. Good Luck.

1 out of 1 people think this is helpful.
16,255

did you use the correct bulbs in the sockets? Both the blinkers in the front and rear use a 2 phase bult with 2 filaments in them. If you use a single phase bulb on one side it will give you this symptom. Also when you apply the brakes the blinker indicator may come on in the dash (doesnt allways happen).

2 out of 2 people think this is helpful.
1,655

andrew and dedell both have good possiblities one more after you check those is some times when a dual elment bulb fails one element will drop and short to the other element inside the bulb and give you power feed back condion also inspect bulbs close

2 out of 2 people think this is helpful.

when I cut the lights on the signals not work or a brake light when I cut the lights on the brake lights work

We had the same problem with our 91 Chevy Silverado 4.3 litre v-6. The mechanic replaced the multipurpose switch and it worked great for a week then reverted back to the blinker not working consistently. We are going to look for a short in the towing wires.

Like indicated above, trailer light modules short out all the time and cause any number of lighting issues. When mine shorted out, anytime I turned on my right blinker all my lights would flash and my vehicle would drop out of cruise control, but everything was find using my left turn signal.

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