Did they change the flasher?
SOURCE: anti lock brakes activation
if abs activates when it should not,,, it means abs module senses one or more wheel sensores under 3 mph and the other sensores are above 3 mph. .the cause of this is usualy a bad wheel speed sensor or excessive air gap between the sensor and ringwheel. you need an abs data scanner to hook up and go for a test drive to find out which sensor is the culprit.
SOURCE: replace turn signal switch 1998 chevy lumina
You may look or feel the back side of the steering wheel, looking for 2 screws that hold the airbag to the wheel, these will be internal torq type screws (star) you may have to rotate the steering wheel 90 degrees to access the screws. You should first disable the airbag, by removing the airbag fuse, and or by disconnecting a yellow connector located near the base of the steering column. under the knee bolster.(panel below column). Once the retaining screws are removed, lift bag and disconnect the 2 connector to the airbag, the ground for the horn, and the horn contact wire, which requires you to push down and twist counter clockwise, damage to the horn contact ring will occur if you try and just pull connector from the ring. Now you can remove the steering wheel, may require a puller, and the you will have access to the turn signal switch.
SOURCE: left turn signal quits when brakes applied but
Rear left turn signal?
I suggest that you have a bad ground. A very common thing.
Where the screws go through the metal case of the taillight, and into the body of the van.
Those holes in the van body, and the screw threads, might be rusty, or corroded. They need to be rust/corrosion free for a good ground.
On the back of the metal taillight casing, where the screws go through, is a 'boss'.
A protrusion from the metal taillight casing, that mounts up against the metal body of the van.
The contact area of this boss, plus the area on the van body where it touches, must be rust/corrosion free.
When you apply the brakes you are lighting up lights that use 30 Amps. If the ground source is bad, (Rusty/Corroded contact areas), for those light casings, you won't have enough ground for the brake lights, and turn signals at the same time.
For a test to see if you have a bad ground, use a jumper wire, (22 gauge wire from an old lamp cord, or 18 gauge wire stranded wire that you may have laying around), and connect one end to a mounting screw head of the taillight. Connect the other end to a good ground source. (1.A clean area on the frame. 2.Under the head of a bolt on the frame. 3.Some clean non-painted surface, that you can attach the end of the wire securely)
Now ignition on, apply the brakes, and turn the left turn signal on.
Works?
Bad ground.
(It isn't a turn signal stat, because this would affect both turn signals. Left And Right)
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SOURCE: I have a 2004 chevy
Sounds to me like the hydroboost system has a stuck biass valve in the hydrobooster. The sytem works both the brakes and the steering.
SOURCE: 95 chevy s-10 when head
Sounds like you have bad connections in the sockets of the bulbs in the rear lights. Take the bulbs out and look for corrosion or rust in the sockets. If they are bad you will have to replace them. They sell kits to do this at your parts store. Good Luck
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