It's located under the left side of the dashboard. This is not a traditional flasher.. it's a "module" that controls both turn signals and hazards. Here's a picture and the procedure for replacing it:
- Remove the left closeout/insulator panel.
- Remove the flasher retaining bracket from the insulator panel.
- Disconnect the flasher from the electrical connector.
- Remove the flasher from the vehicle.
Also you might want to check out this TSB, pointing to a bad ground connection which could cause your problem:
Bulletin No.: 04-08-45-010
Date: September, 2004
Various Interior Electrical Concerns, IP Gauges/Lighting Inoperative, HVAC Controls Inoperative, Blower Motor
Inoperative, Radio Inoperative, Flasher Inoperative (Repair Ground 201) Models:
2004-2005 Buick Rainier
2002-2005 Chevrolet TrailBlazer, TrailBlazer EXT
2002-2005 GMC Envoy, Envoy XL
2004-2005 GMC Envoy XUV
2002-2003 Oldsmobile Bravada
Some customers may comment on intermittent operation of various electrical components in the interior of the vehicle. Components that can be affected are not limited to the list that follows:
|^ ||IP Gauges/Lighting Inoperative |
|^ ||HVAC Controls Inoperative |
|^ ||Blower Motor Inoperative |
|^ ||Radio Inoperative |
|^ ||Flashers Inoperative |
|^ ||Transfer Case Shift Controls Inoperative |
Service information ground distribution schematics should be reviewed for complete detail of items grounded at G201.
The cause of these conditions may be a loose or ineffective connection at ground splice pack G201 located on the right side of the front console area.
Repair the ground splice pack G201 connection using the procedure listed below.
|1. ||Remove the center floor console. |
|2. ||Remove the 4 screws that retain the instrument panel (IP) lower closeout carpet panel to the IP substrate. |
|3. ||Remove the IP lower closeout carpet panel. |
|4. ||Remove the ground splice pack G201 bolt. If the bolt shows any sign of discoloration, clean the bolt using a wire brush. |
|5. ||Remove any carpet that may have been trapped during assembly. Clean the ground surface on the body using an emery cloth. |
|6. ||Install the IP lower closeout carpet panel. |
|7. ||Install the 4 screws that retain the IP lower closeout carpet panel to the IP substrate. |
|8. ||Install the center floor console.|