2011 GMC Sierra problems

14V827000

Date: 2014-12-30. Systems: ELECTRICAL SYSTEM.

Defect: General Motors LLC (GM) is recalling certain model year 2011-2012 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado HD, Silverado LD, Suburban, Tahoe, GMC Sierra LD, Sierra HD, Yukon, and Yukon XL vehicles. In the affected vehicles, the ignition lock actuator may bind, making turning the key difficult or causing the ignition to get stuck in the "Start" position.

Consequence: If stuck in the "Start" position, the ignition may suddenly snap back into the "Accessory" position, causing a loss of engine, steering, and braking power, increasing the risk of a vehicle crash. If the vehicle is in a crash, the air bags may not deploy, increasing the risk of occupant injury.

Remedy: GM will notify owners, and dealers will inspect and replace the ignition lock housing, as necessary, free of charge. The recall began on February 12, 2015. Owners may contact GM customer service at 1-800-458-8006 (Cadillac), 1-800-222-1020 (Chevrolet), or 1-800-462-8782 (GMC). GM's number for this recall is 14696 for the original equipment, and 14912 for the service replacement parts.

Do not drive: No. Park outside: No.

11V339000

Date: 2011-06-28. Systems: STEERING.

Defect: GM IS RECALLING CERTAIN MODEL YEAR 2011CADILLAC ESCALADE, ESCALADE ESV; CHEVROLET SILVERADO HD, SILVERADO LD, SUBURBAN, TAHOE; AND GMC SIERRA HD, SIERRA LD, YUKON, AND YUKON XL VEHICLES. THE INTERMEDIATE STEERING SHAFT ATTACHING BOLTS MAY NOT HAVE BEEN TIGHTENED TO THE PROPER SPECIFICATION.

Consequence: THIS COULD ALLOW THE JOINTS TO SEPARATE, AND THE DRIVER COULD EXPERIENCE LOSS OF STEERING INCREASING THE RISK OF A CRASH.

Remedy: GM DEALERS WILL INSPECT AND ENSURE THAT THE INTERMEDIATE STEERING SHAFT BOLTS ARE TIGHTENED TO THE PROPER SPECIFICATION. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OR ABOUT JULY 13, 2011. OWNERS MAY CONTACT CADILLAC AT 1-800-458-8006, CHEVROLET AT 1-800-630-2438 AND GMC AT 1-866-996-9463.

Do not drive: No. Park outside: No.

10108599

Date: 2017-07-17. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.

This technical bulletin provides a procedure to lube the rear leaf springs on vehicles with the condition of a squeak noise originating from the rear of the vehicle.

10113404

Date: 2017-02-08. Type: Service Bulletin/Repair Instructions. Systems: FUEL SYSTEM, GASOLINE.

This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may b

10113364

Date: 2017-01-31. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, HYDRAULIC.

This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.

10113325

Date: 2017-01-12. Type: Service Bulletin/Repair Instructions. Systems: ENGINE, ENGINE AND ENGINE COOLING, POWER TRAIN.

This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should b

10113329

Date: 2017-01-12. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.

This Preliminary Information communication provides information to the technician about vehicles that within 10 seconds after startup the radio will mute and phone icon displays on the radio for up to 15 seconds and then returns back to normal operation. Technician will need to use the OnStar system

10100822

Date: 2016-07-11. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

THIS INFORMATIONAL BULLETIN PROVIDES THE TECHNICIAN WITH WHAT MAY HAPPEN TO AN ENGINE DUE TO LACK OF MAINTENANCE.

10113887

Date: 2016-03-01. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, SERVICE BRAKES, HYDRAULIC.

This Preliminary Information communication provides the technician with the additional steps that are needed to help perform a successful brake bleed on the 2-Mode Hybrid with Regular Production Option Code HP2. With a battery maintainer installed on the vehicle use brake pressure bleeder that maint

10113888

Date: 2016-03-01. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

This Preliminary Information communication provides steps the technician will uses to diagnose and repair vehicles that have low oil pressure after an oil change with the engine Regular Production Option Code L20, L77, L94, L96, L99, L9H, LC8, LC9, LH9, LMF, LMG, LY6, or LZ1. Vehicle may have Servic

10113889

Date: 2016-03-01. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.

This Preliminary Information communication provides the technician with a list of modules to check for communication with the scan tool, if the navigation radio does not display the current Hybrid mode. Dealer will use a scan tool to check communication with Accessory Direct current Power Control Mo

10114431

Date: 2016-02-23. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.

This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.