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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 20 (THEFT DETERRENT SYSTEM)DIAGNOSTIC TESTSDTC B1007: CHECKSUM VALUE ERRORTESTING
2004 Oldsmobile Bravada RWD

DTC B1007: Checksum Value Error: Testing

2004 Oldsmobile Bravada RWDSECTION Testing
WARNING: This page is about a different car, the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. If theft deterrent diagnostic system check has been performed, go to next step. If theft deterrent diagnostic system check has not been performed, go to THEFT DETERRENT DIAGNOSTIC SYSTEM CHECK  .
  2. Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC), located below steering column. See Figure . Turn ignition switch to RUN position. Using scan tool, clear DTCs. If scan tool indicates B1007 is current, go to next step. If scan tool does not indicate B1007 as current, go to DIAGNOSTIC AIDS  .
  3. Replace Passlock(tm) module. After repair, go to next step.
  4. Using scan tool, clear DTCs. Operate vehicle to verify fault no longer exists. If DTC B1007 resets, go to step  2 .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.