Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Instrument Cluster Schematics Connector End View Reference: Engine Controls Connector End Views for the 5.3L engine, Powertrain Control Module Connector End Views for the 3.8L engine or Inline Harness Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 | Start the engine. Does the OIL TEMP HIGH message display in the driver information center (DIC)? | -- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
3 |
Does the Engine Oil Temperature Calculated parameter display a value within the specified range? | 30-140°C (86-284°F) | Go to Step 10 | Go to Step 4 |
4 |
Does the Engine Oil Level parameter display at or below the specified value? | 30°C (86°F) | Go to Step 6 | Go to Step 5 |
5 | Test the signal circuit of the engine oil temperature switch for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 7 |
6 | Inspect for poor connections at the harness connector of the engine oil temperature switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 8 |
7 | Inspect for poor connections at the harness connector of the ECM/PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 9 |
8 | Replace the engine oil temperature switch. Refer to Engine Oil Level Sensor and/or Switch Replacement for the 5.3L engine or Engine Oil Level Sensor and/or Switch Replacement for the 3.8L engine. Did you complete the replacement? | -- | Go to Step 11 | -- |
9 | Replace the ECM/PCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 11 | -- |
10 | Replace the IPC. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
