- The speed control is inoperative
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- Wiring, terminals or connectors
- PCM not configured for speed control
- Stoplamp switch
- Speed control deactivator switch (integral to the stoplamp switch)
- Speed control switches
- Digital Transmission Range (TR) sensor
- Vehicle speed signal
- PCM
- ABS module
- Park brake
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- The speed control indicator lamp is never/always on
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- Wiring, terminals or connectors
- Instrument Cluster (IC)
- PCM
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- The speed control switches do not operate correctly
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- Wiring, terminals or connectors
- Speed control switches
- Clockspring
- PCM
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