Fluid capacities, tune-up values and fuel economy at a glance.
Engine oil capacity4.5 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
Lug nut torque140 ft-lbsOEM · verified
Fitment & sizes
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 78 - PRIMARY BATTERY · 600 - PRIMARY BATTERY CCA battery, OE oil filter 12731175. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4.5 qt of 5W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 140 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-6-5-4-3-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.
Lubricants & capacities
Automatic Transmission Fluid
ATF
Automatic Transmission Fluid Capacity
5
Brake Fluid
DOT 3
Differential Gear Oil
80W-90 · GL-5
Differential Gear Oil Capacity
4.5 qt
Engine Oil
5W-30 · API
Engine Oil Capacity
4.5 qt
Engine torques
Engine Oil Pan Drain Plug
18.0 ft-lbs
Engine Valve Cover Bolts
8.85 ft-lbs
Chassis torques
Leaf Spring to Axle (U-bolts)
74.0 ft-lbs
Leaf Spring to Chassis Bracket
74.0 ft-lbs
Leaf Spring to Rear Shackle
103.0 ft-lbs
Leaf Spring Rear Shackle to Chassis Bracket
74.0 ft-lbs
Lug Nuts
140 ft-lbs
Transfer Case Fill Plug
15.0 ft-lbs
Transfer Case Drain Plug
15.0 ft-lbs
Front Wheel Hub
147 ft-lbs
Ignition
Cylinder Firing Order
1-6-5-4-3-2
Cylinder Firing Order
1-6-5-4-3-2
Spark Plug Manufacturer
AC Delco
Spark Plug Gap
0.060 in
Spark Plug Torque
11 ft-lbs
Battery & A/C
Refrigerant
R134a
Oil Group
PAG
Oil Type
46
Optional BCI Group Number
78 w/SEO
Optional BCI Cranking Performance
770 w/SEO cca
Standard BCI Group Number
78 - PRIMARY BATTERY
Standard BCI Cranking Performance
600 - PRIMARY BATTERY cca
Service checks
Pressure Test
20 psi
Radiator Cap Pressure Relief
15 psi
Thermostat Opening Temperature
188-206 °F
Fuel Pump Pressure Minimum
62.0 psi
Key ON Engine OFF (KOEO)
55-62
RPM
45-59 @ Idle rpm
Engine Compression
100 Minimum psi
Engine Compression
215 Nominal psi
Brakes
Torque Caliper to Bracket
80 ft-lbs / 31 ft-lbs
Torque to Knuckle
129 ft-lbs / 148 ft-lbs
Minimum Pad Thickness
Front: 0.030; Rear: 0.030 specification
Rotor Max Parallel Variation
0.001 in
Rotor Runout Limit
0.005 in
Rotor Nominal Thickness From
1.142 in / 0.787 in
Rotor Nominal Thickness To
1.142 in / 0.787 in
Rotor Minimum Machining
1.102 in / 0.748 in
Multi-step torque procedures OEM · verified
Cylinder Head — tightening sequence 4 stages
1
all bolts
22 ft. lbs
2
long bolts
75 degrees
3
medium bolts
65 degrees
4
55
Cylinder Head — tightening sequence 1 stages
1
all bolts
22 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
1
22.0
Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 100,000 mi; coolant at 150,000 mi. The big-interval services (at 150,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.