Service quick specs OEM factory data
Capacities, torques and tune-up values from the factory service manual.
This engine holds 5 qt of 5W-30 API engine oil, DOT 3 brake fluid. Torque lug nuts to 100 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
| Brake Fluid | DOT 3 |
| Engine Coolant | DEX-COOL OR EQUIVALENT |
| Engine Oil | 5W-30 · API |
| Engine Oil Capacity | 5 qt |
| Power Steering Fluid | USE GM PART NO. 1052884 OR EQUIVALENT |
Engine torques
| Cylinder Head Steps | Apply sealant GM P/N 12346004 |
| 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) | 89.0 ft-lbs |
| Leaf Spring to Chassis Bracket | 89.0 ft-lbs |
| Leaf Spring to Rear Shackle | 89.0 ft-lbs |
| Leaf Spring Rear Shackle to Chassis Bracket | 89.0 ft-lbs |
| Lug Nuts | 100 ft-lbs |
| Front Wheel Hub | 103 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 |
| Refrigerant Capacity | 1.75-2.00 lbs |
| Oil Group | PAG |
| Oil Type | 46 |
| Oil Capacity | 8.00 oz |
| Standard BCI Group Number | 75 |
| Standard BCI Cranking Performance | 525 cca |
| Optional BCI Group Number | 75 |
Service checks
| Pressure Test | 15 psi |
| Radiator Cap Pressure Relief | 15 psi |
| Thermostat Opening Temperature | 195 °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
| Brake Application | WITH FOUR WHEEL DISC / WITH STANDARD |
| Torque to Knuckle | 77 ft-lbs / 52 ft-lbs / 38 ft-lbs |
| Minimum Pad Thickness | Front: 0.030; Rear: 0.030 specification |
| Brake Application | WITH FOUR WHEEL DISC / WITH STANDARD |
| Rotor Max Parallel Variation | 0.001 in |
| Rotor Runout Limit | 0.002 in |
| Rotor Nominal Thickness From | 1.14 in / 0.787 in / 1.03 in |
| Rotor Nominal Thickness To | 1.14 in / 0.787 in / 1.03 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 |
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
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.
| At 7,500 mi | Drive Axle Assembly (drain & refill) |
| Every 7,500 mi | Axle Shaft Oil Seal (inspect) · CV Joint Boot (inspect) · Differential (inspect fluid level) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate) |
| At 15,000 mi | Engine Air Filter Element (inspect) |
| Every 30,000 mi | Engine Air Filter Element (replace) · Engine Air Filter Element (inspect) · Fuel Filter (replace) |
| Every 50,000 mi | Transfer Case Assembly (drain & refill) · Transmission Fluid & Filter (replace) |
| Every 100,000 mi | PCV Valve (inspect) · Spark Plug Wires (inspect) · Spark Plugs (replace) |
| At 150,000 mi | Accessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill) |