You dont have to take it to the dealership but chances are your going to have Thottle body performance issues and if thats tha case 1 is you would need to have the throttle body cleaned 2 there is a special policy that will cover the replacement of the throttle position sensor and reprogramming of the pcm at no cost to you. This is the policy here#11273B: Special Coverage Adjustment - Throttle Position Sensor Replacement - (Dec 16, 2013)
Subject:*11273B — Special Coverage Adjustment – Throttle Position Sensor Replacement
Models:*2008-2011 Cadillac Escalade, Escalade ESV, Escalade EXT2008-2009 Chevrolet TrailBlazer2008-2011 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe2009-2011 Chevrolet Colorado2008-2009 GMC Envoy2008-2011 GMC Savana, Sierra, Yukon, Yukon XL2009-2011 GMC Canyon2008-2009 HUMMER H22008-2010 HUMMER H32009-2010 HUMMER H3T2008-2009 Saab 9-7xEquipped with V8 Engine (LFA, LY2, L20, LMG, LC9, LH6, LMF, LH8, LH9, L76, LS2, LY5, LY6, L92, L96, LZ1, L94, L9H)
This bulletin has been revised to include 2008-2009 Saab 9-7x export vehicles. Please discard all copies of bulletin 11273A.
ConditionOn some 2008-2009 Saab 9-7x; 2008-2009 Chevrolet TrailBlazer; GMC Envoy; HUMMER H2; 2008-2011 Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe; GMC Savana, Sierra, Yukon, Yukon XL; 2008-2010 HUMMER H3; 2009-2011 Chevrolet Colorado; GMC Canyon; and 2009-2010 HUMMER H3T vehicles, equipped with a V8 engine, the throttle position sensor may cause the engine to run rough and cause the malfunction indicator lamp and/or an Engine Reduced Power message to illuminate. If this occurs, it could result in reduced engine power.Special Coverage AdjustmentThis special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.
