K 2500 Truck 4WD V6-262 4.3L VIN Z (1992)
Fluid - M/T: Technical Service Bulletins
M/T - Correct Transmission Fluid Usage
Number:
92-80-7B
Section:
7B
Date:
JAN. 1992
Corporate Bulletin No.: 167203
ASE No.: A3
Subject:
CORRECT TRANSMISSION FLUID USAGE
Model and Year:
1991-92 C/K AND P3 TRUCKS WITH 5-SPEED MANUAL TRANSMISSION
The NV4500, 5 speed manual transmission (RPO MT8) requires the use of a special synthetic lubricant (P/N 12345871). This special lubricant is
required to reduce transmission internal operating temperatures and is installed in all NV4500 transmissions in production. The synthetic lubricant does
not require periodic changing. If it is necessary to drain and refill or add fluid to the transmission, do NOT substitute any other lubricant. Installation of
other lubricants may result in internal transmission damage.
SERVICE PARTS INFORMATION
P/N
Description
12345871
Fluid, Manual Transmission
(CASTROL SYNTROQ GL4) (1 gallon)
Parts are currently available from GMSPO.
