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Home >> GMC >> 2003 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Controls - System & Component Testing - 6.6L) >> Fuel Systems >> Fuel Injector Balance Test With Tech 2 >> Test Description
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Test Description

WARNING: This page is about a different variant/trim than selected.

The numbers below refer to step numbers in diagnostic procedure.

  1. 3  - A balance rate between -4 mm3 and +4 mm3 will not cause a driveability concern. A balance rate less than -4 mm3 , between 4 mm3 and 14 mm3 will cause a driveability concern without any DTCs. A balance rate of more than 15 mm3 will set a DTC.
  2. 5  - This step determines if ECM can control a stable fuel pressure. A high balance rate may be caused by a fuel injector or compression only if ECM can control fuel pressure.

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