My 1998 Saturn SL2's speedometer and odometer do not work. I replaced the instrument cluster, they still do not work. I replaced the vehicle speed sensor, they still do not work. What is my next step to solving this problem?

You might have to replace the speedometer cable

There is no odometer fuse . Does the speedometer work ?

If speedometer works , you need a new instrument cluster . Pinpoint Test E: The Speedometer/Odometer Is Inoperative Normal Operation Vehicle speed information is sent to the instrument cluster from the anti-lock brake system (ABS) module over the communication network.

Possible Causes
• ABS module
• Instrument cluster

Speedometer
The instrument panel cluster (IPC) displays the vehicle speed based on the information from the body control module (BCM). The engine control module (ECM) calculates the vehicle speed based on the controller area network (CAN) serial data message indicating the wheel reference speed from the electronic brake control module (EBCM). The ECM sends a CAN serial data message to the BCM indicating the vehicle speed. The BCM sends a class 2 message to the IPC indicating the vehicle speed.
The speedometer defaults to 0 km/h (0 mph) when any of the following occur:
• The EBCM detects a malfunction in the vehicle speed sensor circuit.
• The ECM detects a loss of CAN communications with the EBCM.
• The BCM detects a loss of CAN communications with the ECM.
• The IPC detects a loss of class 2 communications with the BCM.

Having the vehicle scanned for codes would probably point you in a correct diagnostic direction .

Take it to a qualified repair shop that knows how to diagnose these problems . Replacing parts is not the way to do it . Not knowing how this works an having a factory scan tool to view VSS - vehicle speed sensor input to the PCM / ECM - engine computer an data to the instrument cluster microprocessor over the class 2 serial data bus ( network ) You may never fix it . You have the cluster fixed ???? It's not the cluster , checking data with a professional scan tool an checking for codes in the instrument cluster . Not the engine OBD 2 code's .
Speedometer
The speedometer is an analog gauge that is located in the instrument cluster. The VCM/PCM sends vehicle speed pulses to the instrument cluster on a designated circuit.
The speedometer system consists of the instrument cluster, vehicle speed sensor (VSS), PCM/VCM and related wiring. Repairs to the instrument cluster can only be performed by an authorized instrument cluster service center.
The PCM/VCM converts the analog output from the vehicle speed sensor to a digital signal containing 4,000 pulses per mile (PPM) for the instrument cluster. The PCM/VCM is matched to the final drive and tire size of each vehicle. If the final drive or tire size is changed for any reason, the PCM/VCM must be updated in order to match the new final drive or tire size. If not, the signal will not be accurate for proper speedometer/odometer operation. An incorrect signal can affect the antilock brakes and the cruise control systems.
The VSS is a permanent magnet signal generator that sends an analog signal proportional to the propeller shaft speed to the PCM/VCM. The VSS mounts to the transmission tailshaft extension housing on 2-wheel drive models and the transfer case output shaft housing on 4-wheel drive models.

Properly support the vehicle so that the wheels are off the ground. Refer to Lifting and Jacking the Vehicle in General Information.
With the scan tool select Powertrain, Engine Data, and Data in order to monitor the vehicle speed.
Start the engine. Place the transmission in gear and the wheels spinning.
Compare the vehicle speed on the scan tool to the speed displayed on the speedometer.
Does the scan tool agree with the speedometer?

Inspect for a speed input signal to the cluster by backprobing with a J 39200 digital multimeter (DMM).
Select the AC Voltage scale then select frequency.
Measure between the vehicle speed signal and ground.
Does the frequency measure within the specified range?
18-25 HZ (at 20 MPH)

Your first step should be to have the vehicle hooked up to a factory or professional scan tool .
Diagnostic Trouble Codes (DTCs)
The DTCs when set, indicate that the instrument cluster has detected a malfunction in a particular circuit or other system. The instrument cluster is programmed with routines for internal tests that the instrument cluster follows only under prescribed conditions (test conditions). When these conditions exist, the instrument cluster tests certain circuits or systems for a malfunction (failure conditions). When the failure conditions are true, a DTC is set current. Some DTCs command the instrument cluster to illuminate the SERVICE VEHICLE SOON indicator.
The DTCs are not stored in the instrument cluster's electrically erasable programmable read only memory (EEPROM). The DTCs are not retained after a battery disconnect.
Instrument Cluster EEPROM
Important: The EEPROM is soldered into the instrument cluster. You can not service the EEPROM separately.
The instrument cluster contains a data storage device that can save critical data even when battery power is removed. This device is called the electrically erasable programmable read only memory (EEPROM). The EEPROM is used by the instrument cluster in order to store the following information:
• The odometer readings
• The options settings
• The manufacturing information
Speedometer and Odometer
An electronic circuit operates the speedometer. The vehicle speed sensor (VSS), located in the transaxle, generates an ac voltage with a frequency proportional to the speed of the vehicle. The voltage goes to the powertrain control module (PCM) and then to the speedometer circuit board in the instrument cluster. The solid state unit drives the pointer of the speedometer.
The same buffered speed signal from the PCM is processed by the speedometer circuit board in order to drive the odometer. The odometers are operated by a stepper motor that responds to pulses from the speedometer circuit.

if the odometer is working then the problem is with the speedometer head unit as the odometer gets its information from the same source as the speedometer. you can have the speedometer head checked and fixed if its fixable.

you need to find out if you have a speed sensor or a speed-o-cable give these websites a try www.alldatadiy.com and www.autozone.com if all fails stop by your local library and get your hands on a Haynes auto repair manual for your car wish you the best of luck Michigan Man.

My gas guage, speed odometer and tempiture does not work
The speed odometre is reading 9999999 what should i do

Problem is in the guage cluster assy.The ODO is mechanical,serviced by replacing guage cluster.

Call Odometer Gears Ltd at 757-593-3478 or go to http://www.odometergears.com

They will have a simple fix for you and back it up with help over the phone in needed 24/7.