GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

DEFINITION: The low washer fluid indicator is always on or does not turn on with low washer fluid.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Verify the fault is present.

Does the system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Turn the ignition OFF.
  2. Disconnect the washer fluid level switch connector.
  3. Turn the ignition ON.

Does the low washer fluid indicator remain illuminated with the ignition ON?

Go to Step 6

Go to Step 4

4

  1. Turn the ignition OFF.
  2. Connect a fused jumper wire from the washer fluid level switch signal circuit terminal in the washer fluid level switch connector to a good ground.
  3. Turn the ignition ON.

Does the low washer fluid indicator remain illuminated with the ignition ON?

Go to Step 5

Go to Step 8

5

  1. Turn the ignition OFF.
  2. Connect a fused jumper wire across the washer fluid level switch harness connector terminals.
  3. Turn the ignition ON.

Does the low washer fluid indicator remain illuminated with the ignition ON?

Go to Step 11

Go to Step 10

6

  1. Install a scan tool.
  2. Display the body control module (BCM) Data List.

With the washer fluid level switch disconnected is the Washer Fluid Level status OK?

Go to Step 15

Go to Step 7

7

Test the washer fluid level switch signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 16

8

  1. Install a scan tool.
  2. Display the instrument panel cluster (IPC) Lamp Status list.

With the washer fluid level switch signal circuit shorted to ground is the Low Washer Lamp status On?

Go to Step 13

Go to Step 9

9

Test the washer fluid level switch signal circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 16

10

Repair the washer fluid level switch ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 18

--

11

Inspect for poor connections at the washer fluid level switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 12

12

Replace the washer fluid level switch.

Is the repair complete?

Go to Step 18

--

13

Inspect for poor connections at the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 14

14

Inspect the low washer fluid indicator bulb for an open. Refer to Instrument Cluster Indicator Lamp Replacement in Instrument Panel, Gages, and Console.

Did you find and correct the condition?

Go to Step 18

Go to Step 15

15

Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Is the repair complete?

Go to Step 18

--

16

Inspect for poor connections at the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 17

17

Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Is the repair complete?

Go to Step 18

--

18

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3