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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 230 (ENGINE CONTROLS - REMOVAL & INSTALLATION)IGNITION SYSTEMSIGNITION COIL(S)REMOVAL (BANK 1)
1999 GMC Forward Control 5.7 R, Automatic

Removal (Bank 1)

1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal (Bank 1)
WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Bank 1 is the cylinder head that is closest to the rear of engine compartment. Turn ignition off. Remove the 2 mounting nuts from the injector sight shield (top engine cover). See Figure . Lift the sight shield from the front and pull forward to disengage the rear tab from the bracket. Disconnect the Ignition Control Module (ICM) electrical connector. See Figure .
  2. Disconnect the AIR vacuum control solenoid valve harness connector. See Figure . Remove the bank 1 AIR shut off valve. Using the removal sequence, remove the ignition cassette retaining bolts. See Figure . Carefully remove the ignition cassette. See Figure . Remove ignition coil(s) from ignition cassette as necessary.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.