2011 Chevrolet Silverado Engine Problems

The contact owns a 2011 Chevrolet Silverado. The contact stated that while driving at an undisclosed speed, she heard a loud abnormal tapping sound at the hood of the vehicle. The contact then stated that upon inspection, she noticed that the tapping sound was coming from the lifter and lifter arm when the piston dropped down. The traction control warning light was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the pistons, rocker arm, head valve seals, and lifter arm needed to be replaced. The vehicle was repaired however, the failure recurred. The contact then stated that upon research she was informed that the engine may need to be replaced. The vehicle was not repaired. The dealer was not notified of the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 260,000.

NHTSA ID

11549261

Incident

Sep 3, 2023

Mileage

260,000 mi

MY DASH IS CRACKING AROUND THE PASSENGER AIRBAG AND ABOVE THE INSTRUMENT CLUSTER. I AM CONCERNED THAT THE CRACKED AREAS COULD COME LOOSE AND BECOME A PROJECTILE. THE ENGINE IS ALSO BURNING OIL BADLY AND COULD SHUT DOWN WHILE DRIVING

NHTSA ID

10810819

Incident

Oct 1, 2015

TL* THE CONTACT OWNS A 2011 CHEVROLET SILVERADO. WHILE DRIVING APPROXIMATELY 15 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THE VEHICLE CONTINUED TO ACCELERATE. THE CONTACT STATED THAT THE THROTTLE WAS ALSO STICKING AND THE ENGINE INDICATOR WAS ILLUMINATING. THE VEHICLE STALLED AND WOULD NOT RESTART FOR TEN MINUTES. THIS WAS A RECURRING FAILURE. THE CONTACT HAD TO PUSH THE ONSTAR BUTTON, WHICH PROVIDED THE CODES OF THE FAILURE. THE FAILURE CODES STATED THAT THE PPS THROTTLE SYSTEM WAS FAILING. THE DEALER STATED THAT THEY COULD NOT LOCATE A FAILURE. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 83,918. THE VIN WAS UNKNOWN.

NHTSA ID

10766488

Incident

Mar 15, 2015

Mileage

83,918 mi

FIRST OF THREE VEHICLE COLLISIONS THIS YEAR INVOLVING CHEVROLET SILVERADOS THAT HAVE CAUGHT FIRE AFTER INVOLVED IN FRONTAL IMPACTS. VEHICLE TRAVELING WESTBOUND ON SR 58 IN LANE COUNTY, OREGON. INVOLVED IN SECONDARY COLLISION WITH A TOYOTA PICKUP TRUCK THAT HAD BEEN STRUCK BY A LOOSE TRUCK TRACTOR WHEEL. THE IMPACT BY THE WHEEL CAUSED THE TOYOTA TO ENCROACH INTO THE PATH OF THE CHEVROLET. THE OCCUPANTS OF CHEVROLET WERE ABLE TO EXTRICATE THEMSELVES. THE VEHICLE SUBSEQUENTLY CAUGHT FIRE AND SUFFERED EXTENSIVE FIRE DAMAGE.

NHTSA ID

10759197

Incident

Feb 26, 2015

WE WERE MAKING A STOP AT THE LIGHT , WHEN A 18-WHEELER DIDN'T STOP AND HIT US IN THE BACK ,PUSHING US TOWARDS THE BUS THAT WAS IN FRONT OF US , MAKING THE GLASS OF THE BACK BREAK AND THROWING ALL THE CRYSTALS IN OUR BODY AND CLOTHES ,THE AIR BAGS NEVER OPEN , THE FRONT SEATS WERE BROKEN AND 3 OF THE 4 DOORS COULDN'T CLOSE ANYMORE, THE DRIVER TRIED TO MAKE A MOVE TO THE LEFT OR RIGHT , BUT HE COULD NOT , BECAUSE WE WERE STUCK, WHEN WE REALIZE THERE WERE NO MAJOR INJURY, WE STAYED UNTIL THE RED CROSS CAME TO CHECK OUR CONDITION,BUT THERE WERE CRYSTALS EVERYWHERE SO WE COULDN'T MOVE WITHOUT HURTING OURSELVES. WE BUY THE TRUCK WITH 2 MILES,WE ARE THE ONLY OWNERS. *TR

NHTSA ID

10704219

Incident

Mar 13, 2015

Mileage

120,000 mi

AT 36000 MILES THE ENGINE BURNS OIL. SO FAR AS OF 46000 MILES PISTONS BURNED HAVE BEEN REPLACED PVC FILTER AND VALVE WERE REPLACED ALONG WITH VALVE COVER. AT PRESENT 54000 MILES ENGINE STILL BURNS OIL. *TR

NHTSA ID

10549719

Incident

Feb 13, 2013

Mileage

39,000 mi

CHECK ENGINE LIGHT IS DISPLAYED AND THE MOTOR IS HESITATING. THIS ISSUE IS A SECOND OCCURRENCE DUE TO THE VALVE COVER LEAKING AND CAUSING THE SPARK PLUGS TO GO BAD. FIRST TIME THE VEHICLE WAS UNDER WARRANTY AT APPROXIMATELY 29000 MILES AND NOW THE VEHICLE HAS 39000 MILES AND THE ISSUE HAS RECURRED. THIS APPEARS TO BE A CONTINUALLY RECURRING PROBLEM FOR 2011 CHEVROLET SILVERADO TRUCKS. *TR

NHTSA ID

10513028

Incident

May 21, 2013

Mileage

39,010 mi

I WAS TRAVELING ON A DIVIDED HIGHWAY AND APPROACHING A SLOW MOVING TRUCK IN THE RIGHT LANE AHEAD OF ME. THERE WAS ANOTHER TRUCK BEHIND ME IN MY LANE. I MOVED TO THE LEFT LANE TO PASS THE SLOW TRUCK. JUST AFTER I BEGAN THE PASS MY PICKUP SLOWED QUICKLY AND BEGAN FLASHING ERROR MESSAGES: STABILITY CONTROL DISABLED, ENGINE POWER REDUCED & SERVICE STABILITRAK. THE TRUCK BEHIND ME HAD MOVED UP CLOSE AND FOLLOWED ME AROUND THE SLOW MOVING TRUCK. I WAS UNABLE TO ACCELERATE AND CONTINUED SLOWING QUICKLY. I HAD JUST ENOUGH ROOM TO SWERVE IN BEHIND THE SLOW TRUCK AS MY SPEED FELL BELOW ITS SPEED. THE TRUCK BEHIND ME NARROWLY AVOIDED A REAR IMPACT WITH MY TRUCK, WHICH, I BELIEVE, WOULD HAVE BEEN CATASTROPHIC. I PULLED TO THE RIGHT AND TRIED TO SPEED UP. ABOUT 40 MPH WAS ALL MY TRUCK WOULD DO. I STOPPED AND GOT OUT THE MANUAL. IT SAID TO RESET THE STABILITRAK, TURN THE VEHICLE OFF FOR 30 SECONDS. I DID THAT AND THE TRUCK SEEMED TO FUNCTIONED NORMALLY, AT LEAST AS FAR AS ENGINE POWER. I STILL HAD TRACTION CONTROL & STABILITRAK ERROR MESSAGES AND THE SERVICE ENGINE LIGHT WAS ON. I WAS ABLE TO RETURN 40 MILES TO MY HOME TOWN WITH NO FURTHER INCIDENTS. I WAS ABLE TO GET MY TRUCK INTO THE CHEVY DEALER ON THE 30TH. THE SERVICE REP RECOGNIZED MY DESCRIPTION IMMEDIATELY AS A "THROTTLE SENSOR" FAILURE. IT WAS REPAIRED UNDER WARRANTY. THERE HAVE BEEN NO FURTHER INCIDENTS. MY CONCERNS ARE DUAL: FIRST, ONLY LUCK AND YEARS OF EMERGENCY VEHICLE OPERATION TRAINING ENABLED ME TO AVOID BEING HIT FROM BEHIND BY THE FOLLOWING TRUCK WHEN MY TRUCK UNEXPECTEDLY AND WITHOUT WARNING LOST POWER. AN IMPACT WOULD HAVE LIKELY BE LIFE THREATENING CONSIDERING THE SPEED AND PROXIMITY OF TWO TRUCKS. SECOND, SUBSEQUENTLY, I HAVE FOUND MULTIPLE INTERNET REPORTS OF THIS ISSUE GOING BACK SEVERAL MODEL YEARS AND MY SERVICE PAPER WORK INDICATES A GM SERVICE BULLETIN FOR IT EXISTS. *TR

NHTSA ID

10448331

Incident

Jan 26, 2012

Mileage

44,000 mi