Diagnostic Aids

Code 37 can be caused by a misadjusted brake switch or a poor connection. Code may also be set by unusual driving habits (i.e. stop-and-go expressway driving).

Fig 1: Code 37 Schematic (3.4L (VIN S)) TCC Brake Switch Error

Fig 2: Code 37 Diagnostic Flow Chart (3.4L (VIN S)) TCC Brake Switch Error