Section 6E · Pages 615–657 (43 pages)

Engine Emission Controls

From the 1979 GMC Light Duty Truck (Series 10–35) Chassis Service Manual

Emission systems on 1979 trucks: PCV, evaporative control, EGR valves (ported signal, positive and negative backpressure) with functional checks, early fuel evaporation, air injection, catalytic converter operation, vacuum hose routing diagrams and the emission control chart with distributor and spark plug data.

Read this section free, starting at page 615

What this section covers

  • EGR valve identification and checks
  • Early fuel evaporation (EFE)
  • Air injection system
  • Evaporative control canister
  • Vacuum hose routing
  • Emission control specification chart
Year
1979
Make
Chevrolet, GMC
Vehicle
C/K Trucks, G Vans, Light Duty Trucks, P Forward Control, Trucks
Type
Service Manual
Models
C, K, G and P Series 10–35 light duty trucks, including Blazer, Jimmy and Suburban
Pages
842

What’s inside

Chassis service manual

  1. 0AGeneral Informationpp. 3–8
  2. 0BMaintenance and Lubricationpp. 9–23
  3. 1AHeaterpp. 24–40
  4. 1BAir Conditioningpp. 41–104
  5. 2AFramepp. 105–108
  6. 2BBumpersFront and rear bumper, rear step bumper removal and installation for C, K, P and G models, with torque specifications.pp. 109–111
  7. 2CChassis Sheet Metalpp. 112–124
  8. 2DCab and Bodypp. 125–188
  9. 3AFront Alignmentpp. 189–194
  10. 3B1Steering Linkagepp. 195–204
  11. 3B2Manual Steering Gearpp. 205–211
  12. 3B3Power Steering Systempp. 212–231
  13. 3B4Steering Columnspp. 232–284
  14. 3CFront Suspensionpp. 285–324
  15. 3DRear Suspensionpp. 325–333
  16. 3EWheels and Tirespp. 334–342
  17. 4APropeller Shaftpp. 343–356
  18. 4BRear Axlepp. 357–382
  19. 4CFront Wheel Drivepp. 383–386
  20. 5Brakespp. 387–438
  21. 6BEngine Coolingpp. 439–461
  22. 6CFuel Systempp. 462–560
  23. 6DEngine Electricalpp. 561–614
  24. 6EEngine Emission Controlspp. 615–657
  25. 6FEngine Exhaust Systempp. 658–666
  26. 7AAutomatic Transmissionpp. 667–709
  27. 7BManual Transmissionpp. 710–729
  28. 7CClutchpp. 730–743
  29. 8Electrical: Body and Chassispp. 744–814
  30. 9Accessoriespp. 815–842

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