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HOMESERVICE MANUALSBUICK1999REGAL LSREPAIR AND DIAGNOSISGENERAL INFORMATIONCOMPUTER RELEARN PROCEDURESCOMPUTER RELEARN PROCEDURES - TRUCKS & VANSESCALADE, PICKUP, SIERRA, SILVERADO, SUBURBAN, TAHOE & YUKONVEHICLE DRIVEABILITY COMPUTER RELEARN PROCEDURE (4.8L, 5.3L & 6.0L)
1999 Buick Regal LS

Vehicle Driveability Computer Relearn Procedure (4.8L, 5.3L & 6.0L)

1999 Buick Regal LSSECTION Vehicle Driveability Computer Relearn Procedure (4.8L, 5.3L & 6.0L)
  1. On manual transmission vehicles, go to next step. On automatic transmission vehicles, turn ignition off. Reconnect PCM battery connection. Turn A/C off. Set parking brake and block drive wheels. Start and run engine so coolant reaches 176°F (80°C). Shift transmission into Drive. Idle engine for 5 minutes. Shift transmission into Park. Idle engine another 5 minutes. Turn engine off for 30 seconds. PCM relearn procedure is completed.
  2. On manual transmission vehicles, turn ignition off. Reconnect PCM battery connection. Turn A/C off. Set parking brake and block drive wheels. Shift transmission into Neutral. Start and run engine so coolant reaches 176°F (80°C). Idle engine for 5 minutes. Turn engine off for 30 seconds. PCM relearn procedure is completed.
RENDER: 1.0x

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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.