| Subject: | Addition of DTC U1500 for Generation 4 (F1) OnStar® | 
| Models: | 2002 Buick Century, LeSabre, Regal | 
| 2002 Cadillac DeVille, Seville | 
| 2002 Chevrolet Impala, Monte Carlo | 
| 2002 Oldsmobile Aurora, Intrigue | 
| 2002 Pontiac Bonneville | 
| 2002 Chevrolet and GMC S/T Utility Models (TrailBlazer, Envoy) | 
| 2002 Oldsmobile Bravada | 
| with Generation 4 (F1) OnStar® | 
This bulletin is being canceled. Please discard Corporate Bulletin Number 02-08-46-005 (Section 08 - Body and Accessories).
For vehicles that exhibit this condition, technicians should refer to Corporate Bulletin Number 05-08-46-006N - Information on Upgrading Certain OnStar Analog/Digital-Ready Systems to OnStar® Generation 6 Digital-Capable System
The following vehicles are either upgradeable or not upgradeable:
2002 Buick Century - NON UPGRADE, LeSabre - UPGRADE, Regal - NON UPGRADE
2002 Chevrolet Impala - UPGRADE, Monte Carlo - UPGRADE
2002 Oldsmobile Aurora - UPGRADE, Intrigue - NON UPGRADE
2002 Pontiac Bonneville - UPGRADE
2002 Chevrolet and GMC S/T Utility Models (TrailBlazer, Envoy) - ALL UPGRADE
2002 Oldsmobile Bravada - UPGRADE