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Home › Hummer › 2003 › H2 › Repair and Diagnosis › External Pages › Different car › Section 138 (Engine Controls - Self Diagnostics - 4.3L) › Programming › Idle Learn Procedure

Idle Learn Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition to the ON position, wait for 5 seconds.
  2. Turn the ignition to the OFF position, wait for 10 seconds.
  3. Start the engine and check for proper idle speed.
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