2014 GMC Sierra 3500 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2014 GMC Sierra 3500, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Fuel system220.0%
- Driver assistance220.0%
- Engine110.0%
- Exterior lighting110.0%
- Powertrain (other)110.0%
- Brakes110.0%
- Steering110.0%
- Electrical110.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
CP4 High Pressure Fuel Pump failed/disintegrated causing metal shavings to be pumped through out the fuel lines, injectors and connected systems requiring a replacement of the pump, injector and fuel lines totaling over $11,000 in repairs. Trucks mileage was 94112 at the time.
GOT A RECALL ON DECEMBER 15, 2017 ABOUT THE SECOND GAS TANK ISSUE. ADVISED NOT TO FILL THE SECOND TANK BECAUSE IT CAUSE THE FRONT TANK TO EXPAND, RUB THE DRIVE SHAFT, AND CAUSE A LEAK AND POSSIBLE FIRE. THEY SAID THAT THEY WOULD NOTIFY WHEN PARTS ARE AVAILABLE. HAVE NOT HEARD ANYTHING BACK YET. IT HAS BEEN 2 MONTHS. WE TRAVEL LONG DISTANCES WITH THIS TRUCK AND NEED THE ADDED FUEL FROM THE SECOND TANK. THANK YOU
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
Transmission control module failed. Reduced power to vehicle to first gear. Blinkers, speedometer door locks, and other Safety and driving devices did not work. Check engine turned on. Device is held at some gmc dealerships nationally however they will not sell the part to have the truck repaired.
TL* THE CONTACT OWNS A 2014 GMC SIERRA 3500. WHILE DRIVING APPROXIMATELY 60 MPH, THE VEHICLE UNINTENTIONALLY ACCELERATED WITHOUT WARNING. IN ADDITION, WHILE DRIVING 25 MPH, THE VEHICLE ACCELERATED UNINTENTIONALLY WHEN THE BRAKE PEDAL WAS DEPRESSED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 14,638.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
CP4 High Pressure Fuel Pump failed/disintegrated causing metal shavings to be pumped through out the fuel lines, injectors and connected systems requiring a replacement of the pump, injector and fuel lines totaling over $11,000 in repairs. Trucks mileage was 94112 at the time.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
Transmission control module failed. Reduced power to vehicle to first gear. Blinkers, speedometer door locks, and other Safety and driving devices did not work. Check engine turned on. Device is held at some gmc dealerships nationally however they will not sell the part to have the truck repaired.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
Transmission Control Module TCM failed while driving down the freeway I84 in Boise Idaho. AC Delco part number 24256861. This caused the truck to go into limp mode when at highway speed. While in limp mode the truck would not respond to throttle commands. Truck slowed to 20mph causing a disruption in traffic flow and making it very difficult to get off the freeway, dodging traffic. The TCM failure has been confirmed through a local GMC dealer (Dennis Dillon in Boise Idaho). The Manufacture (General Motors) has discontinued manufacturing this part leaving my vehicle and thousands of others failed. GM's responce is the part is on a national backorder. 24-26 months at the earliest. Aftermarket support is none existent. There were no warning lamps or messages or symptoms prior to the failure. Very limited parts are available on Ebay (10 or less) . Dealer price for the TCM is $710. Ebay pricing is 4-10 thousand. GM customer assistance provides no answers and fails to ackowledge the safety concern of the failed transmission controller.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2014 GMC SIERRA 3500. THE CONTACT STATED WHILE DRIVING AT 35 MPH, THE BRAKES FAILED CAUSING THE FRONT DRIVER SIDE OF THE VEHICLE TO CRASH INTO A SIGN. THE CONTACT WAS ABLE TO DRIVE THE VEHICLE BACK HOME. THE CONTACT SUFFERED SOME LEG SORENESS. A POLICE REPORT WAS FILED. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS TAKEN TO RYAN AUTOMOTIVE GROUP (1101 OLIVER RD, MONROE, LA 71201) WHERE THE BODY DAMAGE WAS REPAIRED HOWEVER, THE FAILURE CAUSE WAS NOT DIAGNOSED. THE CONTACT THEN RECEIVED RECALL NOTIFICATION A FEW MONTHS LATER FOR NHTSA CAMPAIGN NUMBER: 19V645000 (SERVICE BRAKES, HYDRAULIC) AND WHICH THE CONTACT BELIEVED WAS RELATED TO HIS FAILURE. THE MANUFACTURER HAD BEEN INFORMED OF THE FAILURE AND INFORMED THE CONTACT THAT THEY COULD NOT REIMBURSE THE VEHICLE DAMAGE TO THE VEHICLE. THE FAILURE MILEAGE WAS APPROXIMATELY 68,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
POWER STEERING FAILED WHILE DRIVING, BRAKES IMMEDIATELY LESS EFFECTIVE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
Transmission control module failed. Reduced power to vehicle to first gear. Blinkers, speedometer door locks, and other Safety and driving devices did not work. Check engine turned on. Device is held at some gmc dealerships nationally however they will not sell the part to have the truck repaired.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .