S10/T10 Blazer 2WD V6-262 4.3L (1988)
Speedometer Gear, A/T: Service and Repair
Hydra-Matic 700-R4 (4L60)
1.
Disconnect speedometer cable or P.M. generator electrical connector at transmission.
2.
Remove retainer bolt, retainer, P.M. generator if equipped, speedometer driven gear and O-ring seal.
3.
Reverse procedure to install, using new O-ring and adjusting fluid level.