TSB PIC4696B — Cadillac, Chevrolet, GMC and Pontiac Service bulletin

PIC4696B is a service bulletin filed with NHTSA by Cadillac, Chevrolet, GMC and Pontiac, covering 13 Cadillac, Chevrolet, GMC and Pontiac models across the 1995–1999 model years. NHTSA's summary reads: This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from…

NHTSA's file names Cadillac Escalade (1999); Chevrolet Blazer (1995–1999); Chevrolet Camaro (1995–1997, 1999); Chevrolet Corvette (1995–1999); Chevrolet Impala (1995–1996); Chevrolet Malibu (1997–1999); Chevrolet S10 (1997–1999); Chevrolet Suburban (1995–1999); Chevrolet Tahoe (1995–1999); GMC Envoy (1999), and 3 more vehicles listed on this page. A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

No. PIC4696B is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under PIC4696B, its date, and NHTSA's own summary from the public file.