Stainless Works Chevy/GMC Truck 2007+ Headers - Manual

WWW.STAINLESSWORKS.NET 800-878-3635 FAX: 440-543-9183
2007-2013 CHEVY SILVERADO/ GMC SIERRA HEADER
INSTALLATION INSTRUCTION
Thanks for purchasing Stainless Works Muscleflow Headers for your Chevy or GMC
Truck. We have gone to great pains to make sure that our exhaust systems fit and sound
great. Please follow these steps to ensure that your installation goes as planned.
STOCK MANIFOLD AND Y-PIPE REMOVAL
1. Stainless Works recommends the use of Permatex Hi-Temp RTV silicon gasket
maker as an option to or in conjunction with the use of factory gaskets. The
recommended RTV is Sensor-Safe P/N 101BR or 27BR, available at NAPA and
other retailers.
2. Disconnect the battery before starting work on the exhaust system for your
vehicle. Reconnect the battery when the job is completed.
3. Your exhaust system can be installed by a weekend warrior but the use of a lift is
recommended for ease of installation. If using a jack, the vehicle must be placed
on a level hard surface and jack stands are required for safety reasons.
4. Raise vehicle, remove the (2) 15 mm nuts from transmission mount. Support
transmission and transfer case, and remove both large bolts from right side of
transmission cross member and one inner left large bolt from cross member. Let
cross member swing down.
5. Disconnect O2’s from harnesses, remove 3 left and right 15 mm nuts holding “Y”
to manifolds, remove (2) 15 mm nuts at “Y” and flex joint. Lower “Y”.
6. Reinstall cross member.
7. At this time it is necessary to remove the (4) 12mm bolt holding the front drive
shaft to the front axle at the universal, this will help installation of left header, pry
drive shaft from yoke, pull back and move to right or center of vehicle.