Fuel System
Check engine light, sensors (includes O2 or oxygen sensor), emission control devices (includes EGR), engine computer, engine computer, fuel cap, fuel gauge/sender, fuel injection system, fuel pump, fuel leaks, stalling or hesitation.
What Owners Say
"Check engine light activated. Indicated EGR valve needed to be replaced."
Anonymous, WY (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"Wouldn’t pass smog check"
Robert C., CA (2011 Chevrolet Silverado 2500HD LT 6.0-L V8)"Check engine light came on"
Anonymous, WA (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"Ongoing issues with the diesel particulate and diesel exhaust fluid system. I am about to bring the truck to the dealer in two days for the same diesel emission sensor problem for the 4th time in the past 2 years"
David T., NY (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"DEF tank sensors and CAD injector"
Anonymous, CA (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"Heater in DEF tank failed. Fix under warranty"
Anonymous, OR (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"The diesel exhaust fluid injector failed. Device was replaced by dealer under extended warranty. My cost was $107.85 for the deductible"
Gerald W., UT (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"DEF injections system failed at 86000 miles. Dealer replaced system related components under an extended warranty program provided by Chevy because of known problems with parts"
Michael P., WY (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"On four different occasions, the failure of sensors in the DEF/exhaust system caused a power restriction of the engine"
Gary H., MT (2011 Chevrolet Silverado 2500HD 6.6-L V8 diesel)"The diesel exhaust fluid system failed a number of times and had to be taken into the dealership for warranty repair"
Jay B., NE (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"Needed to be replaced"
Stan L., AB (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"Diesel Exhaust fluid injection system started acting up"
Anonymous, WY (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"DEF reservoir had to be replaced"
Anonymous, CA (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"Diesel exhaust fluid sensors stopped working which caused other problems to start happening. My truck was speed-restricted while I was 300 miles away from home. I had to use the closest dealer who charged me an excessive amount of money for a couple of parts which I researched later to be not so expensive. This is the second time this vehicle has had the same issue."
Anonymous, FL (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"This was the first model year that the DEF was included. Problems from the beginning. Luckily warranty covered and now there is a GM program that it also covering them. None the less it results is downtime and use of the vehicle you paid for. That being said, many of my friends with this and other diesels reported similar problems. Hopefully they get this federal mandate garbage right in the future."
Anonymous, NY (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"EGR needed to be replaced. Factory recall only include one ton. My 3/4 ton has same motor and is manufactured in the same facility but was not part of recall. Didn't make since."
Anonymous, CA (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"The diesel exhaust fluid heater and pump failed, putting the vehicle in limp mode limiting the vehicle speed and distance that can be driven until fixed."
Anonymous, NH (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"Fuel injector failed, fixed under warranty"
Anonymous, OR (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"Engine code, limited to 55 mph on restart. DEF tank had to be replaced"
Larry M., TN (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"the DEF level sensor was faltyy, repaired under warrenty"
Judith R., AB (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"Software glitches with the emissions system has put the vehicle into limp mode 3 times with erroneous sensor data interpretation."
Anonymous, CA (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"had to have two sensors replaced"
Anonymous, NJ (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"Had to replace both sensors for error codes"
Anonymous, TN (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"received warning the DEF was "old and not effective." Turned out to be NOX sensors 1 & 2 were bad"
Marv S., CA (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"The O2 sensor was a symptom related to the diesel exhaust fluid system failure"
Jay B., NE (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"temp sensor in def fuel tank"
Anonymous, OK (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"check engine light came on performance sluggish when cold return to normal once at operation temperature. Had mechanical plug in to the ECM and revealed two failed O2 sensors. Scheduled replacement"
Anonymous, CT (2011 Chevrolet Silverado 2500HD LT 6.0-L V8)"DEF sensor has had to be replaced a couple of times."
Anonymous, CA (2011 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)
"DEF system"
Walt F., NJ (2011 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)