Transmission System Description and Operation
WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NV 1500, a rugged, durable and reliable manual transmission, has 5 forward gears and 1 reverse gear. The 5th gear is an overdrive ratio.
All gears have synchronization for clash-free shifting. To reduce gear noise, the gears are in constant helical mesh.
The NV 1500 was designed for quality in lightweight applications (175 lb ft torque and 6,000 lbs GCW). The NV 1500 also features:
- 78 mm center distance - center of input shaft to center of countershaft
- Single rail shift system
- Hydrodynamic bearing for speed gears, no needle bearings
The gear and shift systems are enclosed in a 2 piece aluminum housing which consists of the following components:
- The input shaft
- The mainshaft
- The mainshaft gears
- The countershaft
- The reverse idler gear
- The shift forks
- The shift shaft components
The NV 1500 transmission is used in trucks with the 2.2L engine.