Do you hear a clicking sound? Does the turn light (left or right) come on and stay on or not at all? Do the Hazard lights work?
''If the hazard lights and the turn lights come on but do not flash, the'' flasher module ''is probably faulty. (The service manual says the turn/hazard flasher module is mounted, under the dashboard, above and to the right of the brake pedal mounting support). ''
If the Hazard lights and the turn signal lights do not even come on check their fuses.
This is out of GM's Electronic Service Information (ESI)
Turn Signal, Hazard Lamps Circuit Description
''Both the TRN-BU and the STOP-HAZ fuses in the IP junction block supplies battery positive voltage to the flasher module, which is part of the hazard switch assembly. When the turn signal switch is placed in either the left or right position, current flow is from the flasher module's left or right hand output to the turn signal switch assembly. The flasher module then sends an on-off (flashing) voltage to either the left turn signals and their instrument cluster indicator, or the right turn signals and their instrument cluster indicator. The front turn signals are grounded at G102. The rear turn signals are grounded at G304.
When the hazard switch is pressed, the hazard switch contacts close and the flasher module is connected to the turn signal lamps. The turn signal/hazard flasher supplies battery positive voltage in an on-off flashing pattern to all the turn signal lamps. All the turn signal lamps and both turn indicators illuminate in the same flashing pattern.
''GM has had problems with the flasher module on your year make car.''''
Hopefully this is of some help.
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=== Update (07/11/2018) ===
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Hi @starya ,
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Here’s an image showing the location of the flasher unit for a 2000 Pontiac Sunfire (you didn’t state the year model).
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Search online for ''(insert year) Pontiac Sunfire Flasher unit'' to get prices.[image|1499548] (click on image to enlarge for better viewing)
Do you hear a clicking sound? Does the turn light (left or right) come on and stay on or not at all? Do the Hazard lights work?
''If the hazard lights and the turn lights come on but do not flash, the'' flasher module ''is probably faulty. (The service manual says the turn/hazard flasher module is mounted, under the dashboard, above and to the right of the brake pedal mounting support). ''
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If the Hazard lights and the turn signal lights do not even come on check the fuses.
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If the Hazard lights and the turn signal lights do not even come on check their fuses.
This is out of GM's Electronic Service Information (ESI)
Turn Signal, Hazard Lamps Circuit Description
''Both the TRN-BU and the STOP-HAZ fuses in the IP junction block supplies battery positive voltage to the flasher module, which is part of the hazard switch assembly. When the turn signal switch is placed in either the left or right position, current flow is from the flasher module's left or right hand output to the turn signal switch assembly. The flasher module then sends an on-off (flashing) voltage to either the left turn signals and their instrument cluster indicator, or the right turn signals and their instrument cluster indicator. The front turn signals are grounded at G102. The rear turn signals are grounded at G304.
When the hazard switch is pressed, the hazard switch contacts close and the flasher module is connected to the turn signal lamps. The turn signal/hazard flasher supplies battery positive voltage in an on-off flashing pattern to all the turn signal lamps. All the turn signal lamps and both turn indicators illuminate in the same flashing pattern.
''GM has had problems with the flasher module on your year make car.''''
Hi,
What happens when you want to signal?
Do you hear a clicking sound? Does the turn light (left or right) come on and stay on or not at all? Do the Hazard lights work?
''If the hazard lights and the turn lights come on but do not flash, the'' flasher module ''is probably faulty. (The service manual says the turn/hazard flasher module is mounted, under the dashboard, above and to the right of the brake pedal mounting support). ''
If the Hazard lights and the turn signal lights do not even come on check the fuses.
This is out of GM's Electronic Service Information (ESI)
Turn Signal, Hazard Lamps Circuit Description
''Both the TRN-BU and the STOP-HAZ fuses in the IP junction block supplies battery positive voltage to the flasher module, which is part of the hazard switch assembly. When the turn signal switch is placed in either the left or right position, current flow is from the flasher module's left or right hand output to the turn signal switch assembly. The flasher module then sends an on-off (flashing) voltage to either the left turn signals and their instrument cluster indicator, or the right turn signals and their instrument cluster indicator. The front turn signals are grounded at G102. The rear turn signals are grounded at G304.
When the hazard switch is pressed, the hazard switch contacts close and the flasher module is connected to the turn signal lamps. The turn signal/hazard flasher supplies battery positive voltage in an on-off flashing pattern to all the turn signal lamps. All the turn signal lamps and both turn indicators illuminate in the same flashing pattern.
''GM has had problems with the flasher module on your year make car.''''
Hopefully this is of some help.