Denny Ken is correct about the switch for offroaders. i think the GM fan would hold up but, better safe than sorry and only thing You have to do is remember to turn it off into water and back on. Very cheap insurance for sure.
Go to eadperformance.com and look up
OEM Electric GM Truck Fan.
then go to Nelson Performance and buy the wiring harness He has already built for this purpose. Has relays etc. and can be programmed to turn off and on if You have tuning software or know someone who does. Not handheld programers but, software like HP Tuning.
You will have to cut tranny cooling lines so fan will fit. Cut lines for the room needed and then splice rubber hose between the cut out sections that will be removed to fit fan in. You will have to do this for both lines.
Wiring harness comes with insrtuctions on how to hook it up and the electric fan will not bolt into H2 holes. Line up dual fans and mark where You will need to drill fan shroud. The holes that old fan used will work to bolt on.
Use a rubber washer between shroud and frame and shroud and bolt head. gives some cushion against vibration. Do not over tighten or You bust shroud. I did not take the time but if You can find a metal insert to go in shroud hole so that bolt will pull up snug on spacer it would prevent over tightening and cracking shroud.
TAZ
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05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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