1993 GMC Sonoma

CERTAIN R&B, INC. CENTRAL MULTIPORT FUEL INJECTION (CMFI) FUEL RETURN LINES, MODELS HELP 55163, NAPA BALKAMP 700-3270, AND THE CONNECTION 2560001, SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR THE VEHICLES LISTED ABOVE. THE FUEL RETURN LINE HAS A MECHANICAL BLEED VALVE WHICH WAS NOT INSTALLED AT THE PROPER TORQUE.

THIS RECALL ONLY PERTAINS TO R&B, INC. AFTERMARKET CMFI RETURN FUEL LINES AND HAS NO RELATION TO ANY ORIGINAL EQUIPMENT INSTALLED ON THE LISTED PASSENGER VEHICLES. CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.

THIS RECALL ONLY PERTAINS TO AFTERMARKET FRAM FUEL FILTERS AND HAS NO RELATION TO ANY ORIGINAL EQUIPMENT INSTALLED ON THE VEHICLES LISTED. CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.

SIGNIFICANT WEAR CAN DEVELOP ON THE LOW AND REVERSE CLUTCH PREVENTING THE PARK PAWL FROM ENGAGING. THIS CAN PREVENT A "NO PARK" CONDITION TO OCCUR WHILE THE ENGINE IS RUNNING, CAUSING UNINTENTIONAL MOVEMENT OF THE VEHICLE WITHOUT OPERATOR ACTION. (THE "NO PARK" CONDITION WILL NOT OCCUR WHILE THE ENGINE IS OFF.)

SYSTEM: POWERTRAIN; TRANSMISSION; AUTOMATIC. VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND UTILITY VEHICLES EQUIPPED WITH 4-WHEEL DRIVE. NOTE: THE S SERIES TRUCKS ARE NOT INCLUDED BECAUSE THEY ARE ONLY 2-WHEEL DRIVE. NOTE: IF YOUR VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED WITHIN A REASONABLE TIME AND FREE OF CHARGE OR THE REMEDY DOES NOT CORRECT THE DEFECT OR NONCOMPLIANCE, PLEASE CONTACT CHEVROLET SERVICE CENTER AT 1-800-222-1020; OR GMC SERVICE CENTER AT 1-313-456-4547. ALSO, CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.

VEHICLE DESCRIPTION: CERTAIN 4-WHEEL DRIVE PICKUP TRUCKS AND SPORT UTILITY VEHICLES EQUIPPED WITH ABS (ANTILOCK BRAKING SYSTEM) MANUFACTURED FROM SEPTEMBER 1989 THROUGH AUGUST 1996. UNDER CERTAIN DRIVING CONDITIONS THE SWITCH WHICH SIGNALS THE ABS SYSTEM WHETHER THE VEHICLE IS IN 2-WHEEL OR 4-WHEEL DRIVE CAN MALFUNCTION CAUSING INCREASED STOPPING DISTANCES DURING ABS STOPS WHILE IN THE TWO-WHEEL DRIVE MODE.

THE FIRST PHASE OF OWNER NOTIFICATION LETTERS BEGAN MAY 31, 2000, WITH THE LAST MAILING COMPLETED BY OCTOBER 2000. OWNERS CAN CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).