I've been trolling around looking for some answers, '11 Silverado CC 4x4 LTZ 5.3. Dealing with throttle body issues. I want to replace it, the dealer replaced it once already, it only lasted 8 months/6-7k. Extremely frustrating just looking for a better unit any suggestions?

 

How about telling us Why it was replaced and What issue are you currently having?

 

If it is the throttle it is covered under warranty if you are under 120,000 miles. An alternative would be to swap to a LS3 90mm throttle body. http://www.ebay.com/itm/2009-2010-Chevrolet-Corvette-Z06-Throttle-Body-LS3-LS7-GM-12605109-/350927333470?hash=item51b4e6285e&vxp=mtr
On some 2008-2009 Chevrolet Trailblazer; GMC Envoy; HUMMER H2; 2008-2011 Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe; GMC Savanna, 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 Adjustment
This 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.

Dealers are to replace the throttle position sensor and reprogram the Engine Control Module. The repairs will be made at no charge to the customer.

For 2008-2010 model year vehicles: For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after September 21, 2012, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to September 21, 2012, must be submitted to the Service Contract provider.

For 2011 model year vehicles: For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after June 28, 2013, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to June 28, 2013, must be submitted to the Service Contract provider.

Vehicles Involved
All involved vehicles are identified by Vehicle Identification Number on the Applicable Warranties section in GM Global Warranty Management system. Dealership service personnel should always check this site to confirm vehicle involvement prior to beginning any required inspections and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description or option content.

Parts Information
Parts required to complete this special coverage are to be obtained from General Motors Customer Care and Aftersales (GMCC&A).

 

Stability control came on, traction light, reduced power, all at highway speed slowed the truck from 65 to 35 in a really big hurry, not fun. Dealer cleaned it, good for a month maybe. Did it all again and they replaced it for $600. Not even a year later it's doing it again.

 

I'd be looking at the wiring and connectors.

 

Any in particular? Or disconnect, inspect, clean and apply dielectric?

 

The proper diagnostics would be to check continuity for the throttle body wiring. If it's broken any where, it could be repaired or the pig tail can be replaced.

Very common on these trucks.

 

Mine is doing the same thing but only when I floor it for a few seconds...extremely frustrating.

 

What codes are set. It could be a tuning issue if your truck is supercharged.