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Chevrolet Silverado / GMC Sierra. Manual - part 1141
Fig. 432: Identifying Oil Pump Rotor & Pump Vane Rings
Courtesy of GENERAL MOTORS CORP.
10. Install the rotor guide (211) and the bottom pump vane ring (210) into the rotor (212) and
retain with J 36850 or an equivalent. See Special Tools.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
11. Install the rotor (212) with the rotor guide (211) toward the pump pocket.
12. Install the pump vanes (213). Ensure the vanes are flush with the oil pump body surface.
13. Install the top pump vane ring (210).
OIL PUMP COVER DISASSEMBLE
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Fig. 433: View Of Oil Pump Cover & Components
Courtesy of GENERAL MOTORS CORP.
1. Remove the oil pump reverse boost valve retaining ring (221).
2. Remove the reverse boost valve sleeve (220) and the reverse boost valve (219).
3. Remove the pressure regulator isolator spring (218) and the pressure regulator valve spring
(217).
4. Remove the pressure regulator valve (216).
Fig. 434: Identifying Converter Clutch Valve Components
Courtesy of GENERAL MOTORS CORP.
5. Remove the oil pump converter clutch valve retaining ring (222).
6. Remove the stop valve (223) and the converter clutch valve (224).
7. Remove the converter clutch valve (246).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Fig. 435: Identifying Pressure Relief Bolt Valve components
Courtesy of GENERAL MOTORS CORP.
8. Remove the pressure relief bolt rivet (227).
9. Remove the pressure relief spring (229) and the pressure relief ball (228).
10. Remove the oil pump cover screen (232) and the oil pump cover screen seal (231).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
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