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 MANUALSCHEVROLET2000MALIBU V6-3.1L VIN JREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATIONENGINE COOLANT TEMPERATURE GAUGE AND HIGH TEMPERATURE INDICATOR
2000 Chevrolet Malibu V6-3.1L VIN J
Engine Coolant Temperature Gauge and High Temperature Indicator
2000 Chevrolet Malibu V6-3.1L VIN JSECTION Engine Coolant Temperature Gauge and High Temperature Indicator
This function controls the engine coolant temperature gauge and the high
temperature indicator (red). The PCM reads the engine coolant temperature sensor and sends the information to the BCM via class 2 serial data link. The BCM converts the PCM data into gauge data for the instrument cluster sent via SPI serial data link. The BCM also sends the high temperature indicator ON/OFF request to the instrument cluster via the SPI serial data link. The instrument cluster receives the engine coolant temperature sensor information via SPI serial data link and converts it into a temperature gauge pointer position.
temperature indicator (red). The PCM reads the engine coolant temperature sensor and sends the information to the BCM via class 2 serial data link. The BCM converts the PCM data into gauge data for the instrument cluster sent via SPI serial data link. The BCM also sends the high temperature indicator ON/OFF request to the instrument cluster via the SPI serial data link. The instrument cluster receives the engine coolant temperature sensor information via SPI serial data link and converts it into a temperature gauge pointer position.
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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.