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DTC 44: Last Transmitter Message Received Had Encryption Error: Testing

WARNING: This page is about a different car, the 2000 GMC Yukon, 2000 Chevrolet Tahoe, 2000 Chevrolet Pickup, and 2000 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
  1. Reprogram Remote Keyless Entry (RKE) transmitter. See REMOTE KEYLESS ENTRY (RKE) TRANSMITTER  under PROGRAMMING. Attempt to perform all functions controlled by RKE transmitter. If RKE transmitter controls all functions, repair is complete. If RKE transmitter does not control all functions, go to next step.
  2. Program a known-good RKE transmitter. Attempt to perform all functions controlled by RKE transmitter. If RKE transmitter controls all functions, repair is complete. If RKE transmitter does not control all functions, go to next step.
  3. Replace Body Control Module (BCM). See BODY CONTROL MODULE (BCM)  under REMOVAL & INSTALLATION. Reprogram RKE transmitter(s). Retest operation.
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