BULLETIN: 214001 PITMAN/IDLER ARM FAILURE ON GM FULL SIZE TRUCKS VARIOUS APPLICATIONS PROBLEM: SOLUTION: Pitman or idler arm stud breaks on vehicles MOOG® Problem Solver® Heavy Duty with modified tires and/or suspension Pitman & Idler Arms When the suspension is lifted, and/or MOOG® Problem Solver® Heavy Duty Pitman and Idler Arms, noted by an larger aftermarket tires are used on the BROKEN STUD “HD” suffix, feature key enhancements: affected vehicles, the steering geometry changes and puts excessive stress on the • Innovative double-taper socket design provides better resistance Pitman and/or idler arm. This stress causes to stud deflection excessive stud deflection (movement) • Full induction-hardened stud for maximum strength and may cause stud fracture, which then results in steering loss. • MOOG gusher bearing technology for superior durability • Unique Belleville washer and telescopic spacer design provides a secure assembly • Greaseable for longer life and smoother operation IDLER ARM • Enhanced e-coating for superior EXCESSIVE DEFLECTION rust resistance PITMAN ARM Before installing new components, stud fracture inspect centerlink tapered holes to be sure they are not worn (fretted) or out-of-round. WORN Replace centerlink as required. Description Years Make/Model P/N K6535HD 1999-2007 Chevrolet Silverado 1500, GMC Sierra 1500 Idler IDLER ARM 2003-2013 Chevrolet Express 2500, 3500, GMC Savana 2500, 3500 K6534HD Arm t 804-1 2009-2011Ar Chevrolet Express 4500, GMC Savana 4500 2000-2011 Chevrolet Suburban 2500, GMC Yukon XL 2500 Chevrolet Silverado 1500 HD, 3500, 2001-2007 Idler GMC Sierra 1500 HD, 3500 K6535HD Arm 2001-2010 Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD 2003-2009 Hummer H2 FORGED GREASE FITTING 2007-2010 Chevrolet Silverado 3500 HD, GMC Sierra 3500 HD HOUSING 1999-2007 Chevrolet Silverado 1500, GMC Sierra 1500 2000-2010 Chevrolet Suburban 2500 BELLEVILLE WASHER / Pitman 2001-2007 Chevrolet Silverado 2500 HD TELESCOPIC SPACER K6536HD Arm 2001-2010 GMC Sierra 2500 HD METAL GUSHER BEARING 2003-2007 Hummer H2 TECHNOLOGY 2003-2008 Chevrolet Express 2500, 3500, GMC Savana 2500, 3500 Chevrolet Silverado 1500, 1500 HD, 3500, 2001-2007 GMC Sierra 1500 HD, 3500 2001-2010 Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD FULL 2001-2011 Chevrolet Suburban 2500, GMC Yukon XL 2500 INDUCTION-HARDENED INNOVATIVE SOCKET DESIGN Pitman K6654HD STUD Arm 2003-2008 Hummer H2 2003-2013 Chevrolet Express 2500, 3500, GMC Savana 2500, 3500 2007-2010 Chevrolet Silverado 3500 HD, GMC Sierra 3500 HD 2009-2011 Chevrolet Express 4500, GMC Savana 4500 (See www.FMe-cat.com for additional applications.) For parts lookup, visit www.FMe-cat.com tech line: 1-800-325-8886 moogproblemsolver.com ©2015 Federal-Mogul Motorparts Corporation. NASCAR is a registered trademark of NASCAR, Inc. MOOG and The Problem Solver are trademarks owned by Federal-Mogul Corporation, or one or more of its subsidiaries, in one or more countries. All other trademarks shown are the property of their respective owners. All rights reserved. # MPS214001.