Head Up Display (HUD) Turn Signal Indicator Inoperative - Left/Right

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Head Up Display Schematics
1	Did you perform the HUD Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Head Up Display
2	Turn ON the ignition, with the engine OFF. Turn ON the inoperative turn signal. Observe the turn signal lamp indicator on the head up display (HUD). Does the turn signal lamp indicator on the HUD operate properly?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Does the IPC turn signal lamp indicator operate properly?	Go to Step 4	Go to Diagnostic System Check - Lighting Systems
4	Test the suspect turn signal indicator control circuit to the HUD module for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 7	Go to Step 5
5	Inspect for poor connections at the harness connector of the HUD module. 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 7	Go to Step 6
6	Replace the HUD module. Refer to Head Up Display Replacement . Did you complete the replacement?	Go to Step 7	-
7	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2