Tech bulliten as follows:INACCURATE FUEL GAUGE DISPLAY - UPDATED BCM & PROM TECHNICAL SERVICE BULLETIN Reference Number(s): 63-83-04 Related Ref Number(s): 63-83-04 ARTICLE BEGINNING INACCURATE FUEL GAUGE DISPLAY (INSTALL UPDATED BODY CONTROL MODULE AND PROM) Model(s): 1996 Cadillac Concours, DeVille, Eldorado, Seville Bulletin No.: 8 - Chassis/Body Electrical Section: 63-83-04 Date: March, 1996 MODELS AFFECTED 1996 Cadillac Concours, DeVille, Eldorado, Seville built prior to the following VIN breakpoints: VIN BREAKPOINTS
CONDITION At key on, some owners may comment on an inaccurate fuel level display. The fuel gauge may show full, then slowly return to the proper level. CAUSE This condition may be caused by a Body Control Module (PZM) miscalibration. CORRECTION Install updated Body Control Module (PZM) and PROM, using the following procedure. REMOVE OR DISCONNECT Comfort fuse from the trunk compartment fuse block. 1. Rear seat cushion and seat back. 2. Body Control Module (PZM). 3.INSTALL OR CONNECT Updated PROM into updated Body Control Module (PZM). 1. Body Control Module (PZM). 2. Rear seat back and seat cushion. 3. Comfort fuse in trunk compartment fuse block. 4. Reprogram PZM override PZS33 according to the following values: 5. E = 6 = Eldorado " K = 4 = Seville " Ksp = 5 = Concours/DeVille " Store value: Hold the front "Defrost" and "Auto/Econ" ("A/C" for analog IPC) for approximately 5 seconds until the display flashes. 6. Cycle ignition. 7. PARTS INFORMATION PARTS INFORMATION
NOTE: Parts are currently available from GMSPO. WARRANTY INFORMATION For vehicles repaired under warranty, use: LABOR OPERATION: N4800 LABOR TIME: 0.6 hr.
Saturday, May 23rd, 2009 AT 6:21 AM