Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 C-Series Topkick Commercial C6/C7/C8.
Capacities, torques and tune-up values from the factory service manual.
Torque the oil drain plug to 21.0 ft-lbs. 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.
| Crankshaft Pulley and/or Damper Bolts | 189 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | Bolts: 26 ft-lbs, nuts: 12 ft-lbs |
| Engine Oil Pan Drain Plug | 21.0 ft-lbs |
| Engine Compression | 100 Minimum psi |
| Engine Compression | 215 Nominal psi |
| Engine Compression | 100 Minimum psi |
| Engine Compression | 100 Minimum psi |
| 1 | 22 ft. lbs. | 22 ft. lbs |
| 2 | 22 ft. lbs. | 22 ft. lbs |
| 3 | 120 degrees | 120 degrees |
| 4 | bolts 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, 17 | 60 degrees |
| 5 | bolts 15, 18 | 45 degrees |
| 6 | turn 30 | |
| 1 | 3.7 ft. lbs., step 2: 5.9 ft. lbs., step 3: 8.8 | 3.7 ft. lbs |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Cross-vehicle references for the kinds of data on this page.