Section 6B · Pages 670–691 (22 pages)

Engine Cooling

From the 1985 Chevrolet/GMC Light Duty Truck Service Manual (C/K)

Engine cooling for all 1985 light trucks, gasoline and 6.2L diesel. It explains the closed, pressurized system with the 15 lb (103 kPa) pressure-vacuum radiator cap and see-through coolant reservoir, checking coolant level, thermostat location on the L6, small-block, Mark IV and diesel engines, and drive belt tension using a strand tension gage. Diagnosis covers system checks, overheating and noise, and the fan clutch. On-vehicle service covers the fan shroud, water pump, thermostat, radiator, fan and fan clutch, coolant recovery bottle and engine oil cooler.

Read this section free, starting at page 670

What this section covers

  • Pressure cap and coolant reservoir
  • Coolant level checks
  • Thermostat locations by engine, including 6.2L diesel
  • Drive belt tension specifications and adjustment
  • Diagnosis: system checks, overheating, noise and fan clutch
  • Fan shroud, water pump and radiator replacement
  • Fan and fan clutch, coolant recovery bottle
  • Engine oil cooler
Year
1985
Make
Chevrolet, GMC
Vehicle
C/K Trucks, G Vans, Light Duty Trucks, P Forward Control, Trucks
Type
Service Manual
Models
C-K-G-P Series
Publication
ST 382-85
Pages
1,414

What’s inside

Service manual

  1. 0AGeneral Informationpp. 4–17
  2. 0BMaintenance and LubricationSection divider only; the maintenance and lubrication pages are not present in this copy.pp. 18–19
  3. 1AHeating and Ventilationpp. 20–39
  4. 1BAir Conditioningpp. 40–89
  5. 1D1R-4 Air Conditioning Compressor Overhaulpp. 90–113
  6. 1D2DA-6 Air Conditioning Compressor Overhaulpp. 114–135
  7. 2AFramepp. 136–139
  8. 2BBumperspp. 140–143
  9. 2CSheet Metalpp. 144–155
  10. 3Steering, Suspension, Wheels and Tires Diagnosispp. 156–185
  11. 3AWheel Alignmentpp. 186–195
  12. 3B5Steering Columnspp. 196–233
  13. 3B6Steering Linkagepp. 234–243
  14. 3B7Power Steering Gear and Pumppp. 244–263
  15. 3B8Manual Steering Gearpp. 264–273
  16. 3CFront Suspensionpp. 274–313
  17. 3DRear Suspensionpp. 314–323
  18. 3EWheels and Tirespp. 324–335
  19. 4APropeller Shaftpp. 336–349
  20. 4BRear Axlepp. 350–365
  21. 4B1Chevrolet 8-1/2 and 9-1/2 Inch Ring Gear Axlepp. 366–383
  22. 4B2Chevrolet 10-1/2 Inch Ring Gear Axlepp. 384–393
  23. 4B3Dana 10-1/2 Inch Ring Gear Axlepp. 394–399
  24. 4B4Dana 9-3/4 Inch Ring Gear Axlepp. 400–405
  25. 4B5Rockwell 12 Inch Ring Gear Axlepp. 406–421
  26. 4B6Eaton Locking Differentialpp. 422–439
  27. 4B10Rear Axle Specifications and Special Toolspp. 440–443
  28. 4CFront Axlepp. 444–457
  29. 5Brakespp. 458–525
  30. 6Enginepp. 526–537
  31. 6A14.8 Liter In-Line 6pp. 538–569
  32. 6A2Small Block Engines (4.3L V6, 5.0L and 5.7L V8)pp. 570–605
  33. 6A57.4 Liter Mark IV V8pp. 606–637
  34. 6A76.2L Diesel Enginepp. 638–669
  35. 6BEngine Coolingpp. 670–691
  36. 6CEngine Fuelpp. 692–707
  37. 6C1E4ME CarburetorSection title page and E4ME carburetor adjustment specifications by part number.pp. 708–709
  38. 6C6Diesel Fuel Injectionpp. 710–725
  39. 6C71ME Carburetorpp. 726–739
  40. 6C10M4ME Carburetor (notice)Notice page stating that information for this section would be shipped at a later date; the revised M4M carburetor section is bound at the back of this copy.pp. 740–743
  41. 6DEngine Electricalpp. 744–833
  42. 6EDriveability and Emissions (notices)Notice pages for Sections 6E, 6E8 (carburetor) and 6E9 (diesel), stating that the information would be shipped at a later date.pp. 834–839
  43. 6FEngine Exhaust SystemExhaust system description and catalytic converter service.pp. 840–843
  44. 6HVacuum Pumpspp. 844–847
  45. 7AAutomatic Transmissionpp. 848–867
  46. 7A350C Automatic Transmissionpp. 868–925
  47. 7A400 Automatic Transmissionpp. 926–987
  48. 7A700-R4 Automatic Transmissionpp. 988–1079
  49. 7B3-Speed 76mm Transmissionpp. 1080–1097
  50. 7B4-Speed 89mm Transmissionpp. 1098–1117
  51. 7B4-Speed 117mm Transmissionpp. 1118–1137
  52. 7CClutchpp. 1138–1157
  53. 7DModel 205 Transfer Casepp. 1158–1171
  54. 7DModel 208 Transfer Casepp. 1172–1189
  55. 8BChassis Electricalpp. 1190–1215
  56. 8CInstrument Panel and Gagespp. 1216–1263
  57. 9Accessoriespp. 1264–1285
  58. 10Cab and Bodypp. 1286–1351

Wiring diagrams

  1. Wiring Diagram Circuit Identificationpp. 1352–1359

November 1984 revision pages

  1. 6C10M4MC, M4ME, M4MED and M4MEF Carburetors (November 1984 revision)pp. 1360–1403
  2. 10Cab and Body Revision Pagespp. 1404–1414

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