Service quick specs OEM factory data
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4.5 qt of 5W-30 API engine oil, SAE 75W · Synthetic 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 1-8-7-2-6-5-4-3. 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 | 7.4 |
| Brake Fluid | DOT 3 |
| Differential Gear Oil | SAE 75W · Synthetic |
| Differential Gear Oil Capacity | 2.75 qt |
| Engine Coolant | DEX-COOL OR EQUIVALENT |
| Engine Oil | 5W-30 · API |
| Engine Oil Capacity | 4.5 qt |
Engine torques
| Crankshaft Pulley and/or Damper Bolts | 189 ft-lbs |
| Intake Manifold to Engine Bolts | Right: 15 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 28 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | Bolts: 26 ft-lbs, nuts: 12 ft-lbs |
| Engine Oil Pan Drain Plug | 18.0 ft-lbs |
| Engine Oil Pan Drain Plug | 18.0 ft-lbs |
| Engine Oil Pan Drain Plug | 18.0 ft-lbs |
| Engine Oil Pan Drain Plug | 18.0 ft-lbs |
Chassis torques
| Leaf Spring to Axle (U-bolts) | 110.0 ft-lbs |
| Leaf Spring to Chassis Bracket | 70.0 ft-lbs |
| Leaf Spring to Rear Shackle | 70.0 ft-lbs |
| Leaf Spring Rear Shackle to Chassis Bracket | 70.0 ft-lbs |
| Lug Nuts | 140 ft-lbs |
| Front Wheel Hub | 177 ft-lbs |
Ignition
| Cylinder Firing Order | 1-8-7-2-6-5-4-3 |
| Spark Plug Manufacturer | AC Delco |
| Spark Plug Gap | 0.060 in |
| Spark Plug Torque | 11 ft-lbs |
| Spark Plug Manufacturer | AC Delco |
| Spark Plug Gap | 0.060 in |
| Spark Plug Torque | 15 ft-lbs |
| Spark Plug Manufacturer | Ac Delco |
Battery & A/C
| Refrigerant | R134a |
| Refrigerant Capacity | 1.60 lbs |
| Oil Group | PAG |
| Oil Type | 46 |
| Oil Capacity | 7.10 oz |
| Standard BCI Group Number | 78 |
| Standard BCI Cranking Performance | 600 cca |
| Standard BCI Group Number | 78 |
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 |
| Fuel Pump Pressure Minimum | 62.0 psi |
| Key ON Engine OFF (KOEO) | 55-62 |
Brakes
| Other | GMT 800 |
| Torque Caliper to Bracket | 74 ft-lbs / 80 ft-lbs / 31 ft-lbs |
| Torque to Knuckle | 133 ft-lbs / 221 ft-lbs / 148 ft-lbs |
| Other | GMT 800 |
| Torque Caliper to Bracket | 74 ft-lbs / 80 ft-lbs / 31 ft-lbs |
| Torque to Knuckle | 133 ft-lbs / 221 ft-lbs / 148 ft-lbs |
| Other | GMT 800 |
| Torque Caliper to Bracket | 74 ft-lbs / 80 ft-lbs / 31 ft-lbs |
Multi-step torque procedures OEM · verified
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
| 1 | 74 ft. lbs., step 2: 90 | 74 ft. lbs |
Cylinder Head — tightening sequence 3 stages
Prep M11 bolts:
| 1 | 22 ft. lbs. | 22 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | 70 degrees; M8 bolts: 22 | 70 degrees |
Cylinder Head — tightening sequence 4 stages
Prep M11 Bolts 1-10
| 1 | 22.0 ft. lbs. | 22 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | bolts 1-8 90 degrees | 90 degrees |
| 4 | bolts 9and10 50 degrees; M8 Bolts | 50 degrees |
| 1 | 22 ft. lbs. | 22 ft. lbs |
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
| 1 | 11 ft. lbs., step 2: 22 | 11 ft. lbs |
Intake Manifold to Engine Bolts — tightening sequence 1 stages
| 1 | 3.7 ft. lbs., step 2: 7.4 | 3.7 ft. lbs |
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
| 1 | 11 ft. lbs., step 2: 18 | 11 ft. lbs |
Intake Manifold to Engine Bolts — tightening sequence 1 stages
| 1 | 3.7 ft. lbs., step 2: 7.4 | 3.7 ft. lbs |
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
| 1 | 11 ft. lbs., step 2: 18 | 11 ft. lbs |
Intake Manifold to Engine Bolts — tightening sequence 1 stages
| 1 | 3.7 ft. lbs., step 2: 5.9 ft. lbs., step 3: 8.8 | 3.7 ft. lbs |
Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
Under the factory schedule, replace the 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.
| Every 15,000 mi | Fuel Filter (replace) |
| Every 25,000 mi | Clutch Hydraulic System (drain & refill) · Exhaust System (Complete) (inspect) · Fuel System (inspect) |
| Every 50,000 mi | Engine Air Filter Element (replace) · Fuel Evaporative Emission Control System (inspect) · Transfer Case Assembly (drain & refill) · Transmission Fluid & Filter (replace) |
| Every 100,000 mi | Spark Plug Wires (inspect) · Spark Plugs (replace) |
| At 150,000 mi | Accessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill) · Transmission Assembly (drain & refill) |