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 MANUALSCHEVROLET1989SUBURBAN 1/2 TON 2WD V8-454 7.4LREPAIR AND DIAGNOSISSPECIFICATIONSCAPACITY SPECIFICATIONSENGINE OILHEAVY DUTY MODELS
1989 Chevrolet Suburban 1/2 Ton 2WD V8-454 7.4L
Heavy Duty Models
1989 Chevrolet Suburban 1/2 Ton 2WD V8-454 7.4LSECTION Heavy Duty Models
CAPACITY, Refill:
6-cyl. 4.3L 3.8 Liters 4.0 Quarts
8-cyl. 5.7L 3.8 Liters 4.0 Quarts
8-cyl. 7.4L: 1988-90 4.8 Liters 5.0 Quarts
8-cyl. 7.4L: 1991-92 5.8 Liters 6.0 Quarts
Type SG
Capacity shown is without filter. When replacing filter, additional oil may be added
Above 40°F (4°C) 30‡
Above 0°F (-18°C) 10W-30*
Below 60°F (16°C) 5W-30
*Preferred
‡May be used when other recommended viscosities are unavailable
6-cyl. 4.3L 3.8 Liters 4.0 Quarts
8-cyl. 5.7L 3.8 Liters 4.0 Quarts
8-cyl. 7.4L: 1988-90 4.8 Liters 5.0 Quarts
8-cyl. 7.4L: 1991-92 5.8 Liters 6.0 Quarts
Type SG
Capacity shown is without filter. When replacing filter, additional oil may be added
Above 40°F (4°C) 30‡
Above 0°F (-18°C) 10W-30*
Below 60°F (16°C) 5W-30
*Preferred
‡May be used when other recommended viscosities are unavailable
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.