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Lingenfelter L300090607 Lingenfelter Suburban Yukon Aux Fan Kit ECM Fan Control 2005-07 v1.0 User Manual

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52. You have completed the installation

process. The auxiliary fans are now controlled

by the production ECM and will be triggered

by engine coolant temperature and also by AC

system pressure. At higher vehicles speeds the

ECM will also disable the fans.

The GM fan diagnostic codes and information

for electric fan equipped trucks now apply to

these auxiliary fans. Handheld scan tools and

other devices will be able to enable the fans.

15.