99-1036

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MAGNUM EGR Test Harness

For GM / General Motors. The EGR motor and harness connections are difficult to access for diagnosis, and GMPT has many ECMs returned with no trouble found for EGR motor codes. This tool installs between the EGR motor and the harness connection, and has an indicator which lights when the EGR motor function is commanded with the Tech 2. The visual indicator will assist the technician in diagnosing whether the fault is in the ECM or wiring, or actually in the EGR motor. This tool will enable the technician to have a more accurate diagnosis, especially due to the limited access to the EGR motor. Applications include: 2004-Current C/K truck, G-Van, H1 Hummer with 6.6L diesel