The speedometer doesn't work. It doesn't respond to the speed we are going.
my fuel pump is not work
If all of the dashboard lights do not work at the same time on a Pontiac Montana, check the instrument panel relay. The relay is located on the firewall in the engine compartment.
its a relay switch
It is probably the speed sensor. It is located on the transmission and sends an electrical signal to the speedometer.
broken cable? Broken gear at transmission end? Broken gear at speedometer head?
blower motor resistor is bad
Do you have check engine light? If not you have an electrical problem within the speedometer assembly.
The engine fan on a 2003 Pontiac Montana works by turning on when the engine reaches a certain temperature. It then blows cool air across the radiator and engine to maintain a constant temperature.
its a fuse
you may need to replace some fuses check the box
If the trouble is the speedometer itself, you can't; but it could be the sending unit and that can be replaced fairly easily. If you remove the right front wheel and move the skirt it can be seen on top of the transaxle extension. If your speedometer AND odometer have ceased to work this is the culprit but if the odometer works accurately but not the speedometer you need another instrument cluster to get a new speedometer.