My turn signal light on the right rear of my 2004 gmc envoy blinks rapidly, I have replaced the light but it continues to do so. The front bliner on that sidxe works.

replace the right rear bulb. the quick flashing indicates a bad bulb. it could be a wiring problem to the rear for the signal light that you will have to check out starting at the socket and working forward.

change the 4 way flasher and that will fix your problem

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feed supply problem somewhere ?but where ? try checking the wiring loom at the rear or as its called in american "pigs tails"

why skip RR lamp? what does IT DO? be like 1st 1st look.
dim, out, fast?

the rapid is talking to you
it means current is wrong,
shorted, or open lines. to the right.
its the wiring
if the bulbs are like 1157 brass base bulbs
why not replace them first , they can short inside,
asking online for guessing is silly, why listen to 10 examples for this.
but is cut wires.
shorted wires.
keep i mind the blinker asks funny for both opens and shorts
its a feature, that.
low current or too much.

the acid test is connect 2 TEST bulbs in parallel to the multi-function switch output right side,
blinks ok now, bingo bad lamps or bad wiring, from there to the right side.

if the hazard fails you never said????
if rigth front is dim or dead the bulb is blown or shorted
if new bulb there , then the wires are shorted.
to it.
the only help on line worth squat is how to test and use your meter.
you can, check for voltage
you can check continuity on that line (its just 1 wire)
and check for shorts on that wire to ground (lamps pulled right side to do that, lamps read 0 ohms cold)
look for collision damage RF? behind lamp sockets?
be first.
in my book.
looking is always first. sure.


I have your SM book open now, chapter 8w-50
the haz/blink module has just 2 pins, left and right out.
pin 3 on the module runs front and rear blinks, (a fact to know)
RF is BR/RD, brown -red stripe?
all comments USA on USA forum. USA car.
ok?

the right side lamp (sidemaker) only blinks turns if parks ARE oFF

Id try 2 new blinker lamps front and 1 rear.
that be first. or test the lamp on a battery , and no not get burned fingers hot wring a shorted lamp.

wish i knew
what rear did
and what both did on HAZ
out, dim or to fast.

Your right rear turn signal bulb is blown.Replace the bulb and the fast blinking will stop.

YOU HAVE A BAD GROUND FOR FLASHERS OR FRONT YTURN IS OUT AND RUNNING LITES HAVE FUSE GOOD LUCK LOOK AROUND FUEL TANK FOR TORN OR PINCHED WIRES

You might check the courtesy cornering lights that illuminate and do not blink. These go on to shine on the front corners of the car. Since they use electric when the blinkers work, it may make the blinkers work faster if the cornering bulb is burned out. You probably are not noticing that the cornering light is not on.

is it possible you have the air shock style suspention you can tell by the large rubber boot on the shock if so one could have a leak and your hearing the on board compressor running constantly 220/min seems mechanical hope this helps

The ford explorer sport track. Will have a short either at the plug of the multi-function switch or 6 inches down where the column bends the wires during tilt.

When 1 is inop and the other rapidly blinks that generally means a bad ground to the front light if you can't find it just attach another ground wire to the bulb socket and see if the light blinks normal.