For 1990-2009 cars

#### Pontiac and Buick with U50/U2F

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Instrument Cluster Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Instrument Cluster
2 |

1. Turn the ignition switch to the ON position.
2. Connect a scan tool.
3. Select the Body Control Module Low Washer Fluid Input menu.

Does the Low Washer Fluid Input Data match the Driver Information Center Warning message?

--

Go to Step 4

Go to Step 3

3 | Replace the instrument panel cluster (IPC). Refer to one of the following procedures:

• | Instrument Cluster Replacement

• | Instrument Cluster Replacement

• | Instrument Cluster Replacement

Is the replacement complete?

--

Go to Diagnostic System Check - Instrument Cluster

--

4 |

1. Turn the ignition switch to the OFF position.
2. Disconnect the washer fluid level switch connector.
3. Connect a fused jumper from the washer fluid level switch connector terminal A to terminal B.
4. Set the ignition switch to the RUN position.

Does the Low Washer Fluid indicator illuminate?

--

Go to Step 5

Go to Step 6

5 | Inspect the washer fluid level switch connector for proper terminal contact at terminals A and B. Is the contact good? | -- | Go to Step 7 | Go to Step 8
6 |

1. Set the ignition switch to the OFF position.
2. Disconnect the instrument cluster connector (UB3) or connector C1 (U50 or U2F).
3. Measure the resistance from the instrument cluster connector (UB3) terminal to A11 or connector C1 (U50 or U2F) terminal A16 to the ground.

Does the resistance match the specified value?

0 ohms

Go to Step 9

Go to Step 10

7 | Replace the washer fluid level switch. Is the replacement complete? | -- | Go to Instrument Cluster System Check | --
8 | Repair any poor contacts at the washer fluid level switch connector. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
9 | Inspect the instrument cluster connector (UB3) for proper terminal contact at terminal A11 or connector C1 (U50 or U2F) for proper terminal contact at terminal A16 Are the connections OK? | -- | Go to Step 11 | Go to Step 12
10 | Inspect CKT 99 (BLK/WHT) for an open or short to the battery. Is the wiring OK? | -- | Go to Step 13 | Go to Step 14
11 | Replace the instrument cluster. Is the replacement complete? | -- | Go to Instrument Cluster System Check | --
12 | Repair any poor terminal contacts. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
13 | Inspect CKT 1150 (BLK) for an open. Is the wiring OK? | -- | Go to Step 15 | Go to Step 16
14 | Repair the open or short to the battery. Is the repair complete? | -- | Go to Instrument Cluster System Check | --
15 | Inspect connector C200 for proper terminal contact at terminal L11. Is the connection OK? | -- | Go to Instrument Cluster System Check | Go to Step 12
16 | Repair any open in CKT 1150 (BLK). Is the repair complete? | -- | Go to Instrument Cluster System Check | --