Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998METRO L4-079 1.3L VIN 2 MFIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONPOWERTRAIN CONTROL MODULE FUNCTIONPCM OUTPUTS DESCRIPTIONUP-SHIFT INDICATOR LAMP (M/T ONLY)
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFI
Up-Shift Indicator Lamp (M/T Only)
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFISECTION Up-Shift Indicator Lamp (M/T Only)
The upshift indicator lamp is located in the instrument panel cluster assembly and is controlled by the powertrain control module. The purpose of the upshift indicator is to provide a display that indicates to the driver when to upshift the manual transaxle for optimum fuel economy. The powertrain control module determines the optimal upshift point based on engine speed and load. The upshift indicator lamp will not be operational under any of the following conditions:
^ The vehicle's speed is less than 5 km/h (3 MPH).
^ The engine is idling or the engine is running under a heavy load.
^ The engine's speed is less than 1,500 RPM.
^ The vehicle's speed is less than 5 km/h (3 MPH).
^ The engine is idling or the engine is running under a heavy load.
^ The engine's speed is less than 1,500 RPM.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.