2007-2013 INSTALLATION GUIDE GMC SIERRA CHEVY SILVERADO DURAMAX 1 GlowShift.com © GlowShift Gauges, LLC | All Rights Reserved 1. To prevent any metal shavings from falling into the engine, remove the air intake manifold following manufacturer specifications found in a vehicle repair manual. 2. Using a Center Punch, mark the Drill location for the boost line. 3. Starting with a 1/8" Drill Bit, Drill a pilot hole. Continue increasing the size of the pilot hole using various Drill Bits until you reach size R. 4. Tap the hole to 1/8-27 NPT. 5. Using compressed air and solvent, thoroughly clean the manifold to remove any metal shavings from the exterior and interior of the manifold. Note: Failure to remove metal shavings can result in possible engine damage. 6. Wrap Teflon Tape around the 1/8-27 NPT threads of the boost line compression fitting. 7. Tighten the boost line adapter into the intake manifold using an 11mm Wrench. 8. Inspect and replace any gaskets as per factory specifications, then reinstall the upper intake manifold to the engine. 9. Insert the boost line into the boost line fitting and tighten the cap with a 3/8” wrench. (Refer to diagram) Note: Do not overtighten. 10. Route the Boost Line up to the firewall to the driver side of the engine bay and use Zip Ties to secure the Boost Line. Ensure there is no contact with any direct heat source or moving parts of the truck. Boost Gauge Installation SECTION 1 PREPARING THE INSTALLATION Disclaimer: In order to install a fuel pressure gauge an aftermarket lift pump must be installed as the factory fuel system operates under a vacuum. • Open the hood and locate the truck’s two batteries. Disconnect the negative terminal of each battery, using an 8mm Wrench, to ensure there is no power running through the truck during the installation. When it comes time to wire and connect the gauges to their power source, we will reconnect power to the negative terminals of the batteries. 3. 9. PROPER ORIENTATION
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