SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 59 (ENGINE CONTROLS SELF-DIAGNOSTICS - 4.3L)INSPECTION/MAINTENANCE PROCEDURESINSPECTION/MAINTENANCE EVAPORATIVE EMISSION SYSTEM SET PROCEDURECONDITIONS FOR RUNNING
1999 GMC Forward Control 5.7 R, Automatic

Conditions for Running

1999 GMC Forward Control 5.7 R, AutomaticSECTION Conditions for Running
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sonoma, 2002 GMC Safari, 2002 GMC Jimmy, 2002 Chevrolet S10 Pickup, and 2002 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Non Scan Tool Service Bay Test

  • The barometric pressure is more than 75 kPa.
  • The fuel level is between 1/4 and 3/4.
  • The battery voltage is between 10-18 volts.
  • The test will initiate only after a cold start. The control module considers the engine to be cold if the following conditions are met:
    1. The Engine Coolant Temperature (ECT) is between 39-86°F (3.8-30.0°C).
    2. The Intake Air Temperature (IAT) is between 39-86°F (3.8-30.0°C).
    3. The difference between the ECT and the IAT is less than 14°F (8°C).

Scan Tool Service Bay Test

  • The Barometric (BARO) pressure is more than 75 kPa.
  • The ECT is less than 176°F (80°C).
  • The fuel level is between 1/4 and 3/4.
  • The battery voltage is between 10-18 volts.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.