Stop Lamps Inoperative
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Stop Lamps Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Depress the brake pedal. Do all of the stop lamps illuminate? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Is only one lamp inoperative? | Go to Step 4 | Go to Step 7 |
| 4 |
|
Go to Step 6 | Go to Step 5 |
| 5 | Test for a poor connection, open or a short to ground in the stop lamp supply voltage circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 10 |
| 6 | Test for a poor connection or an open in the ground circuit of the inoperative stop lamp. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 9 |
| 7 |
|
Go to Step 10 | Go to Step 8 |
| 8 | Test for a poor connection or an open in the low reference circuit of the brake pedal position sensor. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 10 |
| 9 | Replace the inoperative stop lamp. Refer to High Mounted Stop Lamp Replacement orTail Lamp, Turn Signal Lamp, High Mount Stop Lamp, License Lamp, Backup Lamp Replacement - Rear . Did you complete the repair? |
Go to Step 11 | - |
| 10 | Replace the body control module (BCM). Refer to Control Module References
in Computer/Integrating Systems for replacement, setup and programming. Did you complete the repair? |
Go to Step 11 | - |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |