LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1998 >> Forward Control 7.4 B >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Computer Relearn Procedures) >> Computer Relearn Procedures >> SATURN >> Vehicle Driveability Computer Relearn Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Vehicle Driveability Computer Relearn Procedure

WARNING: This page does not describe the selected car, but rather 38 other vehicles, including the 1998 Saturn SW2, 1998 Saturn SW1, 1998 Saturn SL2, 1998 Saturn SL1, and 1998 Saturn SL. However, it is still accessible from the selected car via links, so may be relevant.
  1. If vehicle battery was disconnected or Powertrain Control Module (PCM) was replaced, driving the vehicle will enable the PCM to perform a computer relearn procedure for obtaining proper driveability and engine idle. Until PCM has completed computer relearn procedure, driveability or idle may differ from standard vehicle operation. On A/T models, transaxle shift qualities must be relearned.
  2. On all models, start engine and warm engine to normal operating temperature. Drive vehicle at part throttle with moderate acceleration and with throttle at idle position.
  3. Repeat step 2) until normal driveability exists. Stop vehicle with engine idling. Apply parking brake. Place transaxle in Drive (A/T models) or Neutral (M/T models). Allow engine to idle for about 2 minutes until engine idle stabilizes.
  4. On A/T models, vehicle must be driven to relearn transaxle shift qualities. Operate vehicle so transaxle fluid temperature is at least 113°F (45°C). Drive vehicle at 1/3 throttle so transaxle performs a 1-2, 2-3 and 3-4 upshift. Repeat procedure so transaxle upshifts through all gears at least 10 times. On DOHC engine, go to next step. On SOHC engine, go to step 7).
  5. On DOHC engine, while coasting at 35 MPH, slowly accelerate to1/2 throttle to achieve a 4-3 downshift. Place gearshift in "D3" while coasting at 20 MPH, slowly accelerate at 3/4 throttle to achieve a 3-2 downshift.
  6. Repeat step 5) for 5 times. Vehicle driveability computer relearn procedure is now complete.
  7. On SOHC engine, while coasting at 40 MPH, slowly accelerate to1/2 throttle to achieve a 4-3 downshift. Place gearshift in "D3" while coasting at 30 MPH, slowly accelerate at 1/2 throttle to achieve a 3-2 downshift.
  8. Repeat step 7) for 5 times. Vehicle driveability computer relearn procedure is now complete.
scientia non olet · About LEMON Manuals