Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIROVERHAULSUBASSEMBLY SERVICECONTROL VALVE & OIL PUMPDISASSEMBLE
1990 Chevrolet Lumina APV V6-191 3.1L
Disassemble
1990 Chevrolet Lumina APV V6-191 3.1LSECTION Disassemble
1. Remove bolt (41), cover (330) and gasket.
2. Remove screw (334), solenoid assembly (333) and O-ring seal (337).
3. Remove switches (335 and 338), then the auxiliary valve body (343).
4. Remove orifice control valve (380), spring (381) and pin (304).
5. Remove converter clutch control valve (332), if equipped, and plug (310).
6. Remove pin (345) and slide (348).
7. Remove vanes (352) and rotor (353).
8. Remove pump vane ring (351).
9. Clean control valve and auxiliary valve body with solvent.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.