Shop Now for Synchronizer Assemblies, Hubs, Clutches, and Parts for your 1992-2007 GM New Venture NV4500 5 speed manual transmission.
To convert an unsynchronized, 1998 or older GM NV4500 transmissions requires changing the reverse gear and QU10710 reverse clutch plus adding a QU10003 Synchro Ring and a QK1099 Strut and Spring Kit. A reverse gear assembly can be used in place of the separate gear and strut kit.
The 4th, 5th, and Reverse Gear Clutches are replaceable on all New Venture NV4500 transmissions. When servicing your transmission, always check for wear on the internal splines of the 5th gear clutch and the corresponding splines in the countershaft. The clutch is a loose slip-fit on the countershaft. On a new shaft with a new clutch, a dial indicator mounted to the countershaft and indicating off a synchro tooth will read about 0.10".
We stock individual synchro clutch hubs and sleeves. Synchro clutch teeth wear issues with NV4500 synchronizer sliding sleeves or rings is fairly common. For synchronized NV4500 gears, wear on the leading edge of the clutch teeth usually is caused by one or more of these causes: wrong or contaminated oil, clutch release issues, excessive transmission shaft end-play, shift fork wear, or use of bronze instead of lined synchro rings. The face of 3-4 clutch hubs are also subject to wear from either 3rd gear or the thrust bearing.
Coverage For:
1992-1999 C/K 2500/3500 with NV4500
2000-2007 Chevy Silverado, GMC Sierra with NV4500
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