For 1990-2009 cars

# Correct Solvent for SCPI Poppet Cleaning Procedure

Subject: | Correct Solvent For CSFI Poppet Cleaning Procedure

Models: | 1996-99 Chevrolet, GMC S/T, M/L, C/K, G, P Models

| 1996-99 Oldsmobile Bravada

| 1999 Cadillac Escalade

| with 4.3L, 5.0L or 5.7L Engine (VINs X, W, M, R -- RPOs LF6, L35, L30, L31)

| and All Transmission Types

Some technicians, when servicing 1996 and newer Truck CSFI (Central Sequential Fuel Injection) fuel systems (ref. Corporate Bulletin 87-65-07A), may be using an incorrect solvent when attempting to clean CSFI poppet valves.

Important: The ONLY solvent that will have any effect on the deposits occurring on poppet valves is: "PORT FUEL INJECTOR GASOLINE DETERGENT" (P/N 12345104) (IN CANADA USE P/N 12345515).

The use of Goodwrench "Fuel Injector Cleaner" (P/N 12346291), or any other "Fuel Injector Cleaner" is completely non-effective, and not appropriate for this concern.

### Parts Information

Parts are currently available from GMSPO.