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.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET1990R 20 P/U 2WD V8-454 7.4LREPAIR AND DIAGNOSISMAINTENANCESERVICE INTERVALSNORMAL SERVICE60000 MI OR 96000 KM
1990 Chevrolet R 20 P/U 2WD V8-454 7.4L
60000 MI or 96000 KM
1990 Chevrolet R 20 P/U 2WD V8-454 7.4LSECTION 60000 MI or 96000 KM
Lubricate
Universal Joint, Drive/Propeller Shaft
(heavy duty) (light duty)
Transfer Case
Linkage (if equipped, heavy duty) Linkage (if equipped, light duty)
Suspension
(heavy duty) (light duty)
Steering
Linkage (heavy duty) Linkage (light duty)
Shift Linkage, M/T
(heavy duty) (light duty)
Shift Linkage, A/T
(heavy duty) (light duty)
Parking Brake System
Cable guides, underbody contact points and linkage (heavy duty) Cable guides, underbody contact points and linkage (light duty)
Clutch Linkage
(heavy duty) (light duty)
Brake Pedal Assy
Springs (heavy duty) Springs (light duty)
Clean
Radiator
Filler neck and debris from fins (light duty)
Condenser HVAC
Debris from fins (light duty)
Check
Radiator Cooling Fan Motor
And system operation (heavy duty)
Ignition Timing
(light duty)
Brakes and Traction Control
(heavy duty) (light duty)
Inspect
Positive Crankcase Ventilation
(heavy duty) (light duty)
Ignition Cable
(heavy duty) (light duty)
Heat Shield, Exhaust
And underhood insulation (heavy duty)
Fuel Tank
(heavy duty) (light duty)
Fuel Supply Line
(heavy duty) (light duty)
Fuel Filler Cap
(heavy duty) (light duty)
Fluid - Transfer Case
(if equipped, heavy duty) (if equipped, light duty)
Exhaust Gas Recirculation
(unleaded fuel, heavy duty) And EVRV (light duty)
Drive Belt
(heavy duty) (light duty)
Distributor Advance Unit
(heavy duty)
Coolant Line/Hose
(light duty)
Carburetor
Choke and hoses (heavy duty)
Replace
Spark Plug
(leaded fuel, heavy duty) (light duty) (unleaded fuel, heavy duty)
Oil Filter, Engine
(heavy duty) (light duty)
Fuel Filter
(light duty)
Fluid Filter - A/T
(light duty) Severe conditions (heavy duty)
Fluid - Differential
When driving in dusty areas or towing a trailer (heavy duty) When driving in dusty areas or towing a trailer (light duty)
Fluid - A/T
(light duty) Severe conditions (heavy duty)
Engine Oil
(heavy duty) (light duty)
Coolant
(light duty)
Air Filter Element
(light duty)
Clean/Repack
Wheel Bearing
2WD light duty
Rotate
Tires
(heavy duty) (light duty)
Flush
Cooling System
(light duty)
Universal Joint, Drive/Propeller Shaft
(heavy duty) (light duty)
Transfer Case
Linkage (if equipped, heavy duty) Linkage (if equipped, light duty)
Suspension
(heavy duty) (light duty)
Steering
Linkage (heavy duty) Linkage (light duty)
Shift Linkage, M/T
(heavy duty) (light duty)
Shift Linkage, A/T
(heavy duty) (light duty)
Parking Brake System
Cable guides, underbody contact points and linkage (heavy duty) Cable guides, underbody contact points and linkage (light duty)
Clutch Linkage
(heavy duty) (light duty)
Brake Pedal Assy
Springs (heavy duty) Springs (light duty)
Clean
Radiator
Filler neck and debris from fins (light duty)
Condenser HVAC
Debris from fins (light duty)
Check
Radiator Cooling Fan Motor
And system operation (heavy duty)
Ignition Timing
(light duty)
Brakes and Traction Control
(heavy duty) (light duty)
Inspect
Positive Crankcase Ventilation
(heavy duty) (light duty)
Ignition Cable
(heavy duty) (light duty)
Heat Shield, Exhaust
And underhood insulation (heavy duty)
Fuel Tank
(heavy duty) (light duty)
Fuel Supply Line
(heavy duty) (light duty)
Fuel Filler Cap
(heavy duty) (light duty)
Fluid - Transfer Case
(if equipped, heavy duty) (if equipped, light duty)
Exhaust Gas Recirculation
(unleaded fuel, heavy duty) And EVRV (light duty)
Drive Belt
(heavy duty) (light duty)
Distributor Advance Unit
(heavy duty)
Coolant Line/Hose
(light duty)
Carburetor
Choke and hoses (heavy duty)
Replace
Spark Plug
(leaded fuel, heavy duty) (light duty) (unleaded fuel, heavy duty)
Oil Filter, Engine
(heavy duty) (light duty)
Fuel Filter
(light duty)
Fluid Filter - A/T
(light duty) Severe conditions (heavy duty)
Fluid - Differential
When driving in dusty areas or towing a trailer (heavy duty) When driving in dusty areas or towing a trailer (light duty)
Fluid - A/T
(light duty) Severe conditions (heavy duty)
Engine Oil
(heavy duty) (light duty)
Coolant
(light duty)
Air Filter Element
(light duty)
Clean/Repack
Wheel Bearing
2WD light duty
Rotate
Tires
(heavy duty) (light duty)
Flush
Cooling System
(light duty)
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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.