GM Service Manual Online
For 1990-2009 cars only

Identify transmissions by the number of forward gears and the measured distance (in millimeters) between centerlines of the mainshaft and the countershaft.


Object Number: 1327  Size: SH

The New Venture Gear NV3500 (85 mm) five--speed overdrive manual transmission is identified by the RPO M50 for four wheel drive vehicles and RPO MG5 for rear wheel drive (RWD) vehicles.

The transmission has the following features:

    • Constant mesh helical gearing for reduced noise
    • A two-piece aluminum housing.
    • Synchronized shifting in all forward gears
    • A shift tower mounted shift lever.

Identify the transmissions by the number of forward gears and the measured distance (in millimeters) between centerlines of the mainshaft and the countershaft.


Object Number: 102867  Size: SH

The New Venture Gear NV4500 (109 mm) five--speed manual transmission is available as RPO MW3.

The transmission has the following features:

    • Synchronized shifting in all forward gears
    • Constant mesh helical gearing for reduced noise
    • Overspeed inhibitor from low to first speed gears
    • Dual cone low speed gear and 1ST speed gear synchronizer
    • A shift tower mounted shift lever