Lingenfelter L300090607 Lingenfelter Suburban Yukon Aux Fan Kit ECM Fan Control 2005-07 v1.0 - Manual (Page 2)

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INSTALLATION MANUAL
We encourage you to read this manual thoroughly before you begin work. Make a quick parts
check to make certain your kit is complete (see parts list at the end of this manual). If you discover
shipping damage or shortage, please call our office immediately.
Tools and Materials Required
• Drill
• 3/16” & 1/4” drill bits
• Metric wrench set
• Standard and metric socket set (standard and deep)
• 7/16” socket
• 7 mm socket
• 10 mm socket
• 5mm and 8mm hex (Allen) wrench
• Torque wrench
• Pliers
• Small hammer
• Center punch tool
• Razor blade
• Phillips head screwdriver
• Pry tool or flat head screwdriver
• E5 and E6 inverted Torx socket
• Silver Sharpie or similar paint pen
• Heat gun
• Electrical tape
• Wire stripper
• Wire cutter
• Pin depressor tool or small flat head screw driver
• ECM calibration tools (OPTIONAL)
1.
The Lingenfelter Performance Engineering (LPE) auxiliary cooling fan system is designed to improve the performance
of the air conditioning (AC) system under idling, stopped and low speed conditions on engine driven mechanical fan GM
2500 series Suburban and Yukon XL vehicles.
The system features two electric pusher fans that are packaged in front of the AC condenser to provide supplemental
airflow across the AC condenser. In testing performed by LPE these fans have also shown to improve the stopped and
low speed inlet air temperature heat soak that can cause reduced initial off the line vehicle performance.
Two versions of this auxiliary cooling fan system exist:
• A version that uses the AC clutch to control the operation of the auxiliary fans (PN L300080607).
• This version that has the vehicle’s engine control module (ECM) control the fans directly. This version requires
recalibration of the factory ECM programming (PN L300090607).
The fan diameters and motor sizes have been selected for these kits to be compatible with the production GM supplied
alternators assuming that significant other electrical accessory loads have not been added to the system. If you need
additional alternator output in order to provide for the electrical demands of these fans and other electrical components
that have been added to the vehicle, please contact LPE for information on the available higher output alternators.
If you need additional cooling fan output LPE can provide systems with higher output fans that require the use of
higher output alternators. Contact LPE with your specific requirements and we will design a system that meets your
specifications.
Lingenfelter Performance Engineering also offers many other parts for these and other GM based vehicles so please feel
free to contact us regarding any other possible GM vehicle related product needs you may have.