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 MANUALSCHEVROLET2000C TAHOE 2WD V8-4.8L VIN VREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRIDLE LEARN PROCEDURE
2000 Chevrolet C Tahoe 2WD V8-4.8L VIN V
Idle Learn Procedure
2000 Chevrolet C Tahoe 2WD V8-4.8L VIN VSECTION Idle Learn Procedure
IDLE LEARN PROCEDURE
Anytime the powertrain control module (PCM) or the battery is disconnected, the PCM loses power, or the PCM is reprogrammed, the PCMs learned idle position is lost. The engine idle is unstable when the learned idle position is lost.
AUTOMATIC TRANSMISSION
1. Turn "OFF" the ignition.
2. Restore the PCM battery feed.
3. Turn "OFF" the A/C controls.
4. Set the parking brake and block the drive wheels.
5. Start the engine.
6. Ensure that the engine coolant temperature is more than 80°C (176°F).
7. Shift the transmission into "Drive".
8. Allow the engine to idle for 5 minutes.
9. Shift the transmission into Park.
10. Allow the engine to idle for 5 minutes.
11. Turn "OFF" the engine for 30 seconds.
MANUAL TRANSMISSION
1. Turn "OFF" the ignition.
2. Restore the PCM battery feed.
3. Turn "OFF" the A/C controls.
4. Set the parking brake and block the drive wheels.
5. Place the transmission in "Neutral".
6. Start the engine.
7. Ensure that the engine coolant temperature is more than 80°C (176°F).
8. Allow the engine to idle for 5 minutes.
9. Turn "OFF" the engine for 30 seconds.
Anytime the powertrain control module (PCM) or the battery is disconnected, the PCM loses power, or the PCM is reprogrammed, the PCMs learned idle position is lost. The engine idle is unstable when the learned idle position is lost.
AUTOMATIC TRANSMISSION
1. Turn "OFF" the ignition.
2. Restore the PCM battery feed.
3. Turn "OFF" the A/C controls.
4. Set the parking brake and block the drive wheels.
5. Start the engine.
6. Ensure that the engine coolant temperature is more than 80°C (176°F).
7. Shift the transmission into "Drive".
8. Allow the engine to idle for 5 minutes.
9. Shift the transmission into Park.
10. Allow the engine to idle for 5 minutes.
11. Turn "OFF" the engine for 30 seconds.
MANUAL TRANSMISSION
1. Turn "OFF" the ignition.
2. Restore the PCM battery feed.
3. Turn "OFF" the A/C controls.
4. Set the parking brake and block the drive wheels.
5. Place the transmission in "Neutral".
6. Start the engine.
7. Ensure that the engine coolant temperature is more than 80°C (176°F).
8. Allow the engine to idle for 5 minutes.
9. Turn "OFF" the engine for 30 seconds.
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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.