Auto diagnostic tools Read Codes&quot

Ways to Clear the "Service Engine Soon" Message on a GM Truck 1Insert the key into the ignition in your GM truck and turn it to the "on" position. This is the position right before your engine starts.2Find the trapezoidal-shaped Diagnostic Link Connector under the dashboard near the steering column.3Plug the OBD scanner into the Diagnostic Link Connector. Auto diagnostic tools

The vehicle's battery automatically turns on the scanner.4Locate the arrows on the face of the scanner and use them to scroll through the menu. Select "Read Codes" and write down the codes on a piece of paper.5Unplug the scanner and look up the trouble codes in a repair manual or take the codes to your mechanic. Have any repairs done on the vehicle before proceeding to the next step.6Repeat steps 1 through 3. Use the arrows to find the "Erase Codes" option; press this option.7Unplug the scanner and start the engine. The "Service Engine Soon" message should no longer be visible on the instrument panel.

Ways to Clear TCS Codes in a Saab 1Locate the OBD access port towards the left with the main fuse panel. The principle fuse panel is within the driver's side footwell under the steering column.2Plug the OBD scan tool into the access port and turn on the tool. (These tools are readily available at most auto parts retailers.) Turn the ignition crucial to the "On" position but do not start the engine.3Wait for the scan tool to read "OK" then press "Clear" on the scan tool to clear the TCS codes.