Technical Service Bulletins (TSBs) for the 1990 944 are official communications between Porsche & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS

    • TSB #GRP4/9310

      Date Announced:
      AUG 01, 1993
      NHTSA ID:
      #39626

      BRAKE VIBRATION DAMPER APPLICATION - NEW DAMPING PLATE WITH STEEL CLIP. *TW Read More »

    UNKNOWN OR OTHER

    • TSB #PK-D8-16

      Date Announced:
      MAR 02, 2011
      NHTSA ID:
      #10038544

      PORSCHE: INFORMATION ON HOW TO READ THE VIN. *RM Read More »