Turn signal rear blinker on left side isnt working as well as both brake lights do not work. also the front left blinker blinks twice as fast

SOURCE: 2001 Sunfire rear brake/turn signal don't work.

check your fuzes. if that doesnt do you any good maybe a flasher or check for bad wiring. maybe a short somewhere

SOURCE: 2005 Montana SV6 right front turn signal not working correctly

might try to replace the turnsignal relay which is under the dash i belive, it is round and looks like a very small container about 1inchx1inch...If you replace that and it does the same thing you have a short in the wiring harnes that leaders from the blinkers to the actuatore, or a bad ground, start by chasing the ground and making sure they are all tightly secures with no bare wire/ or pinched wires anywhere..
Hope this fix's'ya!

SOURCE: 2002 Sunfire SE: rear signal light

Turn the signal light on to the right and probe the contacts in the bulb socket with a test light to see if the power is there,your test light should blink,the other contact in the socket is the parking lights and tail light.
if no power at contacts probe the wire it's self where it enters the socket for power.if you have it there the socket is faulty.

Testimonial: "Thanks that was what it was! I need a new socket."

SOURCE: Brake light/turn sigs dont work.But lights are on?

Ok, GM had a problem with their hazard light switches in the years of around 2001-2005. These caused some bizarre workings concerning the hazards, lights, turn signals, etc. The circuits overlap, and when the switch malfunctions, it makes for some odd happenings. Normally, when the hazards are on, they cancel out the brake lights and the turn signals, since they use the same circuits. The normal taillights use a different filament in the same bulb, which is why they light up brighter when you press the brakes. The aftermarket has come up with replacement switches in response to these inherent problems, so do not get your switch from GM. Places like RockAuto.com will sell these, though not necessarily this place, it's just the one I use. Usually, GM put these in the steering column, so replacement can be tricky for the average person, as it involves taking apart some of the steering column.

SOURCE: driver front turn signal does not blink. front

This may have more then one bulb in the front or possibly a bad socket try wiggling the new bulb in the socket to see if it will work.Compare all turn signal lights that come on the passenger side to those drivers side.Some vehicles also incorporate sidemarker lights with the turn signals.