GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Chevy Suburban 4WD - RHD 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Brake Warning Indicator Inoperative

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the connector at the park brake warning switch.
  2. Connect a fused jumper wire between the park brake warning switch connector cavity A for the CKT 33 (TAN/WHT) and ground.

Is the brake indicator illuminated?

--

Go to Step 2

Go to Step 4

2

Adjust the park brake warning switch.

Is the brake indicator illuminated?

--

System OK

Go to Step 3

3

Replace the park brake warning switch.

Is the brake indicator illuminated?

--

System OK

--

4
  1. Disconnect the connector at the instrument cluster.
  2. Connect a test lamp between the instrument cluster connector cavity 31 and ground.

Does the test lamp light?

--

Go to Step 6

Go to Step 5

5

Repair the open in CKT 39 (PNK) between the instrument panel (IP) fuse block and the instrument cluster.

Is the brake indicator illuminated?

--

System OK

--

6
  1. Disconnect the electronic brake control module (EBCM).
  2. Disconnect the park brake warning switch.
  3. Connect a self-powered test lamp at the instrument cluster connector cavity 17 and then the EBCM connector cavity F and the instrument cluster connector cavity 17 and the park brake warning switch cavity A of the CKT 33 (TAN/WHT).

Does the test lamp light?

--

Go to Step 8

Go to Step 7

7

Repair the open in CKT 33 (TAN/WHT) between the instrument cluster and the EBCM or the park brake warning switch.

Is the brake indicator illuminated?

--

System OK

--

8
  1. Connect a self-powered test lamp between the EBCM connector C1 cavity H and ground.
  2. Test for continuity.

Does the test lamp light?

--

Go to Step 9

Go to Step 10

9

Perform the diagnostic testing of the EBCM.

Refer to Diagnostic System Check - ABS in Antilock Brakes in Brakes.

Is the condition repaired?

--

System OK

--

10
  1. Disconnect connector C1 at the EBCM and the brake pressure warning switch.
  2. Connect a self-powered test lamp between the EBCM connector C1 cavity H for CKT 680 (PPL) and the brake pressure warning switch cavity A.
  3. Test for continuity.

Does the test lamp light?

--

Go to Step 12

Go to Step 11

11

Repair the open in CKT 680 (PPL) between the brake pressure warning switch and the EBCM.

Is the condition repaired?

--

System OK

--

12
  1. Connect a self-powered test lamp between the brake pressure differential switch connector cavity B for CKT 150 (BLK) and ground.
  2. Test for continuity.

Does the test lamp light?

--

Go to Step 14

Go to Step 13

13

Repair the open in CKT 150 (BLK) between the brake pressure differential switch and ground G105.

Is the brake indicator illuminated?

--

System OK

--

14

Replace the brake pressure warning switch.

Is the condition repaired?

--

System OK

--