G 2500 3/4 Ton Van V6-262 4.3L VIN Z (1992)
1993 to 1995 L05 VIN K
Install the appropriate check valve oil filter P/N 25160561 (PF1218 for two-wheel C-series and P/N 12555891 (FRAM PH3980) for four-wheel drive
K-series). If the oil filter does not cure the condition, install the appropriate calibration from the table (calibrations are available for some 1993 and 1994
L05 applications). All calibrations are for light duty vehicles equipped with 4L60-E (M30) transmissions (no heavy duty emission/4L80-E calibrations
are available). If a calibration is not offered or does not cure the short duration cold knock condition, install the appropriate main bearings as determined
by the procedure.
1990-94 L19 VIN N
