1999 buick century odometer and gear selecter light does not work. Can part of the speed sensor go out? could this be a fuse or do I have to take dash apart.
This is a common problem and the dash cluster must be removed and sent out for repair, cost is about $175 to replace the LED (Light emitting diode) display that has burned out, this is a faxtory defect as far as this expert is concerned, it is not a fuse problem.
I own this same car and this is the fix, sorry u don't like the cost, I don't build them just try and supply the information at no cost to u to get them fixed, please change the rating, it is unfair.
Thanks, I finally found an answer to this issue. Noticed a lot of other buick owners with the same problem have posted to this site--glad you took the time to answer this for us. Hopefully, posting this comment will bump your answer to the top of the search list.
Thanks!
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Buick Century Odometer, gear selector not lighting, or dim Buick
Century 1999-2004 Have an issue where the Odometer does not light as
for the gear selector too. Four resistors will burn out, as each burns
out the odometer gets dimmer till all go out. Fix is easy. You tube provides the instructions: GM Electronic Gear Indicator and Tripometer Odometer Cluster Tools Screwdriver, Slotted and Phillips 25w Solder iron Radio Shack - Obtain (4) 150 ohm resistors Rosin Core Solder De solder ribbon ------------------------------------- Remove negative battery wire. Remove front dash ( one screw passenger side under the fuse cover rest are clips). Remove the console cluster (4 screws and a data connector) Open and remove the circuit board Locate
4 resistors right side four are under each other. They are the small
circuit resistors but the ones from radio shack will work. Some will be
gone, others fall off with a touch. Bend leads of new resistors, cut to size and solder in place. Reverse order to re install Test , wow brighter then ever.
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The IPC detects a loss of class 2 communications with the PCM.
Fuel Gage
When the fuel level is less than 14% (84ohms), the low fuel indicator illuminates.
Speedometer
The IPC displays the fuel level as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel gage defaults to empty if:
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The PCM detects a malfunction in the fuel level sensor circuit.
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The IPC detects a loss of class 2 communications with the PCM.
Odometer
The IPC contains a season odometer and a trip odometer. Momentarily press the trip select/reset switch in order to toggle between the season odometer and the trip odometer. Press the trip select/reset switch for greater than 1.5 seconds, while the trip odometer is displayed, in order to reset the trip odometer. The IPC displays the vehicle mileage and trip mileage as determined by the IPC. The IPC calculates the mileage based on the vehicle speed information from the PCM. The odometer will display 'error' if an internal IPC memory failure is detected.
PRNDL Display
The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL display shall flash all gear positions if:
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The PCM detects a malfunction in the transmission range switch circuit.
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The IPC detects a loss of class 2 communications with the PCM.
The IPC displays the vehicle speed based on the information from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses per mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 mph (0 kph) if a malfunction in the vehicle speed sensor circuit exists.
Tachometer
The IPC displays the engine speed as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine speed. The tachometer will default to 0 rpm if:
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The PCM detects a malfunction in the engine speed sensor circuit.
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The IPC detects a loss of class 2 communications with the PCM.
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