Note On Intermittents

If B337 shows as a history code, without other codes, check ignition feed, CPS ground, and data circuits intermittent faults. If other codes are stored, refer to MULTIPLE INTERMITTENT CODES.

Fig 1: BCM Code B337, Schematic, Loss Of A/C-Heater Programmer Data

Fig 2: Flow Chart, BCM Code B337, Loss Of A/C-Heater Programmer Data