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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 165 (COMPUTER RELEARN PROCEDURES)GENERAL MOTORS (CARS)CRANKSHAFT POSITION SENSOR SYSTEM VARIATION LEARN PROCEDURECAMARO & FIREBIRD - 5.7L
1998 Chevrolet Suburban K2500, 7.4 J, Part Time

Camaro & Firebird - 5.7L

1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Camaro & Firebird - 5.7L
WARNING: This page does not describe the selected car, but rather 120 other vehicles, including the 2002 Saturn Vue, 2002 Saturn SL2, 2002 Saturn SL1, 2002 Saturn SL, and 2002 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete.
  1. Install a scan tool.
  2. Apply the parking brake.
  3. Block the drive wheels.
  4. Close the hood.
  5. Place the transmission in Park if the vehicle has an automatic transmission, or in Neutral if the vehicle has a manual transmission.
  6. Idle the engine until the engine coolant temperature reaches 150°F (66°C).
  7. Turn OFF all of the accessories.
  8. Apply the brakes for the duration of the procedure.
    9. NOTE: If the CKP System Variation Learn Procedure cannot be completed successfully, see appropriate SELF-DIAGNOSTICS article.
  9. Use the scan tool in order to enable the Crankshaft Position System Variation Learn Procedure.
  10. Slowly raise the engine speed to 4000 RPM.
  11. Immediately release the throttle when the engine speed decreases.
  12. Turn OFF the ignition for 15 seconds after the learn procedure is completed successfully.
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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.