Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 34 of 36
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114. Turn the ignition to the ON position, after a brief delay, the electric pump motor will cycle. Air bubbles will begin to
rise to the filler tee as the coolant level drops, continue to fill while pump is running. Once its done filling, turn the
ignition key OFF, the level will drop, top off with fluid. Reinstall filler cap and turn the ignition ON and let run for
15 seconds. Turn key OFF, remove cap to release air. Repeat until the filler tee holds at the cold fill level with key
OFF. To build more pressure in the intercooler system, try squeezing the intercooler hoses while the pump is
cycling. Building pressure in the system will help push the trapped air from the intercooler system to the filler tee.
It also helps to lift the filler neck 4”-8” higher than its mount to help purge the air. NOTE: Do not let the coolant
level in the funnel run empty as this may introduce more air into the system.
115. Cycle the ignition to the ON position again and repeat until the sound of the electric pump is continuous without
any pulsation and the fluid level is met at the filler cap.
NOTE: During water pump start-up, it is normal for a
slight pulsation to occur. Once the pump has reached its maximum cycle speed, no pulsations should
be present. If any pulsations occur, there is air in the system. NEVER GO WOT UNTIL AIR IS BLED
OUT!
116. Several drive cycles may be required to completely purge the air from the intercooler system. During a drive cycle,
the intercooler system will build up pressure as the supercharger temperature increases. Any residual air trapped in
the system will have to be bled out when the cap is removed. Use a rag when removing in case there is excess
pressure.
CAUTION: Never go WOT until air has been bleed from IC system, engine failure could occur
if not bled properly.
117. Clean the inner area of the gas door with acetone. Attach the “91 OCTANE OR HIGHER” decal to the gas tank fill
cap or door.
118. Attach the negative cable to the battery and tighten.
119. Turn the Ignition key on, DO NOT START THE ENGINE. Inspect for any leaks such as fuel, coolant, and intercooler
coolant, correct as required.
WARNING: Always avoid removing the filler neck cap when the system is hot. The hot coolant is under
pressure and may spray out causing burns.
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