Instrument Panel, Gauges and Warning Indicators: Service and Repair

On some models, a yellow flag with the word emissions will rotate into the odometer window at 30,000 mile intervals indicating either a catalyst or oxygen sensor change is required. After performing the required maintenance, reset the emissions flag as follows:
a. On Cutlass models, remove cluster pad assembly. On 88, 98, Custom Cruiser and Toronado, remove lefthand trim cover.
b. On all models, remove trip odometer reset knob, if equipped.
c. Remove screws attaching cluster lens to cluster assembly and remove lens.
d. Using a pointed tool inserted at an angle to engage flag wheel detents, rotate flag wheel downward. When flag wheel is reset, the alignment mark will be in center of odometer window.

Fig. 12 Instrument panel cluster pad. Cutlass:

CUTLASS
1. Disconnect battery ground cable.
2. Remove righthand and lefthand trim panels, Fig. 12.
3. Remove the 7 screws retaining cluster pad to panel adapter.
4. Pull panel pad to disengage it from retaining clips and remove pad assembly, Fig. 12.
5. Remove steering column trim cover, then disconnect shift indicator clip from shift bowl.
6. Remove the 4 screws retaining cluster assembly, then disconnect speedometer cable and electrical connectors and remove cluster assembly.
7. Reverse procedure to install.