Speedometer Not Working and/or Code P0722 Stored in PCM on Pontiac G3
Problem overview
The speedometer may stop functioning with code P0722 stored in the powertrain control module (PCM). This may be caused by a worn speedometer gear due to coolant contamination of the transmission fluid. If contamination is found the radiator is most likely at fault. The transmission should also be thoroughly inspected and repaired or replaced as required.
16 people reported this problem
6 commentsPontiac G3 vehicles with this problem
1 model year affected
Average mileage: 65,875 miles
(44,000 - 101,000)
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