GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Brake Warning Indicator Always On

Step

Action

Value(s)

Yes

No

Important: 

   • Check for ABS diagnostic trouble codes prior to performing this diagnosis. Refer to Displaying Diagnostic Trouble Codes (DTC) .
   • Check the brake fluid level prior to performing this diagnosis. Refer to Master Cylinder Reservoir Filling .

1
  1. Disconnect the brake fluid level indicator sensor.
  2. Turn the ignition switch to the run position.

Is the brake warning indicator on?

--

Go to Step 2

Go to Step 6

2
  1. Disconnect the park brake switch.
  2. Turn the ignition switch to the run position.

Is the brake warning indicator on?

--

Go to Step 3

Go to Step 7

3

Determine if this vehicle either of the following types:

    • Domestic
    • Gulf States

Is the vehicle one of the above types?

--

Go to Step 4

Go to Step 5

4
  1. Disconnect the daytime running lights (DRL) module.
  2. Turn the ignition switch to the run position.

Is the brake warning indicator on?

--

Go to Step 5

Go to Step 8

5
  1. Test circuit 33 for a short to ground.
  2. If circuit 33 is OK, Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

--

6

Replace the brake fluid level indicator sensor.

Is the repair complete?

--

System OK

--

7

Replace the park brake switch.

Is the repair complete?

--

System OK

--

8
  1. Test circuit 1134 for a short to ground.
  2. If circuit 1134 is OK, Replace the DRL module. Refer to Daytime Running Lights (DRL) Control Module Replacement .

Is the repair complete?

--

System OK

--