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20. The two heater hoses were trimmed and attached directly to the water pump on the passenger side. The transmission lines were reattached to the new radiator. Since it’s a GM replacement, it all bolted right on. Moving on, a trick we learned was to install the Blazer’s high-pressure power steering line into the LQ9 before installing the motor. The Blazer’s original power steering hose will directly thread into the LQ9’s power steering pump. It’s possible to thread it in once installed but it’s a tight fit for most wrenches. The ’81-and-older trucks will need a new power steering hose.