M/T - Correct Transmission Fluid Usage

9215chevy02

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.