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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIROVERHAULSUBASSEMBLY SERVICECONTROL VALVE & OIL PUMPINSPECTION
1990 Chevrolet Lumina APV V6-191 3.1L
Inspection
1990 Chevrolet Lumina APV V6-191 3.1LSECTION Inspection
1. Inspect control valve and auxiliary valve body for oil passage damage, casting porosity, machine face damage, scored valve bores, pump pocket damage and body sleeve for damage.
2. Inspect valves and bushings for scoring or cracks.
3. Inspect for collapsed springs.
4. Inspect pump rotor and vanes for rotor damage, vane damage, vane rings for damage, slide seals and slide O-ring seals.
5. Inspect pump shaft bearing for damage.
2. Inspect valves and bushings for scoring or cracks.
3. Inspect for collapsed springs.
4. Inspect pump rotor and vanes for rotor damage, vane damage, vane rings for damage, slide seals and slide O-ring seals.
5. Inspect pump shaft bearing for damage.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.