K 1500 Yukon 4WD V8-5.3L VIN T (2000)
Starter Motor: Description and Operation
STARTER MOTOR
Two different starter motors are used on these engines.
The PG-260 achieves gear reduction at a ratio of 5:1 through planetary gears. It's relatively small size and light weight and offers improved cranking
performance and reduced current requirements for the gasoline engines.
Solenoid windings are energized when the ignition switch or engine control switch is in the start position. The resulting plunger and shift lever
movement causes the pinion to engage the engine flywheel ring gear, the solenoid main contacts to close, and cranking takes place. When the engine
starts, the pinion over running clutch protects the armature from excessive speed until the ignition switch or engine control switch is released, at that
time the plunger return spring causes the pinion to disengage. To prevent excessive overrunning, release the ignition switch or engine control switch
from the crank position as soon as the engine starts.
