Problems owners report
Complaints filed with NHTSA about the 2007 GMC Sierra Classic, by the system named in each complaint. One complaint can name several.
- Service brakes7
- Service brakes, hydraulic6
- Electrical system3
- Fuel/propulsion system2
- Fuel system, gasoline2
- Power train2
- Engine and engine cooling2
- Steering1
- Visibility1
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 0 injuries and 0 deaths reported
Compared with other years
2007
NHTSA ODI complaints by model year
Fuel consumption
Official Canadian test results for 14 variants: combined 13.9–20.9 L/100 km (about 11–17 mpg US), CO₂ 309–393 g/km.
| Variant | City | Highway | Combined |
|---|---|---|---|
| Sierra Classic · Pickup truck: Standard · Regular gasoline | 15.5 | 11.9 | 13.9 |
| Sierra Classic · Pickup truck: Standard · Regular gasoline | 16.1 | 11.2 | 13.9 |
| Sierra Classic · Pickup truck: Standard · Regular gasoline | 16.0 | 12.1 | 14.2 |
| Sierra Classic · Pickup truck: Standard · Regular gasoline | 16.3 | 12.2 | 14.5 |
| Sierra Classic FFV · Pickup truck: Standard · Regular gasoline | 16.8 | 12.2 | 14.7 |
| Sierra Classic 4X4 · Pickup truck: Standard · Regular gasoline | 17.1 | 12.6 | 15.1 |
| Sierra Classic 4X4 · Pickup truck: Standard · Regular gasoline | 16.7 | 13.4 | 15.2 |
| Sierra Classic 4X4 · Pickup truck: Standard · Regular gasoline | 17.1 | 13.5 | 15.5 |
| Sierra Classic 4X4 · Pickup truck: Standard · Regular gasoline | 17.7 | 13.3 | 15.7 |
| Sierra Classic 4X4 FFV · Pickup truck: Standard · Regular gasoline | 17.7 | 13.8 | 15.9 |
| Sierra Classic · Pickup truck: Standard · Premium gasoline | 18.0 | 13.6 | 16.0 |
| Sierra Classic 4X4 · Pickup truck: Standard · Premium gasoline | 18.8 | 15.0 | 17.1 |
| Sierra Classic FFV · Pickup truck: Standard · E85 ethanol | 21.9 | 16.0 | 19.3 |
| Sierra Classic 4X4 FFV · Pickup truck: Standard · E85 ethanol | 23.2 | 18.2 | 20.9 |
Litres per 100 km. Natural Resources Canada, Fuel consumption ratings (open.canada.ca) · Open Government Licence – Canada
Recalls
No recall campaigns cover the 2007 GMC Sierra Classic.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What GMC told its dealers about the 2007 GMC Sierra Classic: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 634786 | SOME CUSTOMERS WHOSE VEHICLES ARE OPERATED IN DUSTY TYPE ENVIRONMENTS, SUCH AS FARMING OR MINING OFF-ROAD TYPE APPLICATIONS, MAY COMMENT ABOUT THE ILLUMINATION OF THE INSTRUMENT PANEL SES LIGHT, WITH DIAGNOSTIC TROUBLE CODE P0446 SET. *TT UPDATED 7/11/08. *NJ UPDATED 11/5/10. *PE |
| 10116914 | This informational bulletin provides information on the proper mounting paste to apply to tires when mounting and balancing them to prevent conditions like Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel) |
| 10114474 | This Preliminary Information communication provides information to the technician about connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable. |
| 10114470 | This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system. |
| 10114431 | 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. |
| 10114408 | This Preliminary Information communication provides information to the technician about vehicles that are travelling from Canada to the United States. While in the United States they are unable to receive Turn-by-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn-By-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Se |
| 10114354 | This Preliminary Information communication provides information to the technician that some vehicles may have a Service Engine Soon lamp, engine misfire on cylinder 1, 4, 6, or 7 and/or tick noise. Technician will follow service information diagnosis first. If service information diagnosis does not isolate the cause of this concern perform a cylinder deactivation active fuel management system compression test in service information. If the running compression of the misfiring cylinder stays below 25 Pounds per Square Inch regardless of the active fuel management solenoid being commanded on or |
| 10114352 | This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection. |
| 10114343 | This Preliminary Information communication provides information to the technician the steps needed to diagnose and repair the vehicles that may have unwanted or phantom phone calls. Technician will need to determine what type of call the customer is having that is unwanted. The vehicle may receive an incoming call just like any other phone. Typically the customer will hear the phone ringing in the vehicle. This scenario also includes incoming Bluetooth calls. One type of unwanted call can be made if the key pad is faulty the OnStar system will try to make a blue button call for shorted voltage |
| 10114342 | This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system. |
| 10114309 | This informational bulletin explains how to care for wiper blades. |
| 10114299 | This informational bulletin provides a quick guide to updating which model vehicle after replacing the IPC. |
| 10114296 | This warranty administration bulletin provide policy information of the JOB CARD, for a repair on vehicles and what is acceptable - customer authorization; Service manager approvals and transaction authorization; Details of concern, cause and correction; Labor Time; Technician ID and acoutablity of labor time; Proper documentation and retension of warranty parts; Accurate sublet charges and receipts; Add on concerns after the Job Card has been written. |
| 10114280 | This informational bulletin provides information on Inappropriate Warranty Claims Submitted for Damaged Radios and IPCs |
| 10113888 | 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 Service Engine Soon lamp with Diagnostic Trouble Code P0521 or Low Oil Pressure message on the instrument panel. Dealer will need to determine if bulletin 10-06-01-008 was completed. If the bulletin was performed inspect the left rocker cover. Dealer will insure the left rocker can hold water without leak |
| 10113843 | This warranty administration bulletin provides information on the Clarification of Use for Dealer Empowerment Labor Operations and Customer Enthusiasm |
| 10113837 | This informational bulletin provides a list off all the issues revolving around new vehicles for a one stop place to find growing concerns around them. |
| 10113831 | This preliminary information bulletin provides a descritption of operation of the echo control and noise cancellation settings for concernc regarding noice drop outs during calls and muffled sound. |
| 10113796 | This informational bulletin provides information on the proper use of GM floor mats. |
| 10113792 | This informational bulletin provides information to technicians regarding intake manifold inspection/replacement after severe internal engine damage. |
| 10113788 | This warranty administration bulletin provides policy information on courtesy transportation and roadside assistance programs. |
| 10113785 | This informational bulletin adds the 2014 and 2015 model years to information of a language change for OnStar System (U.S. and Canada only). |
| 10113773 | The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. |
| 10113770 | This informational bulletin provides technicians with a brake lathe calibration procedure. |
| 10113753 | This preliminary informational bulletin provides technicians with diagnostic tips for a customer concern of odor emanating from HVAC system. |
NHTSA manufacturer communications (public domain)
NHTSA investigations
EA08010 · Electrical system:12v/24v/48v batteryopened 12 Jun 2008 · closed 8 Sept 2008
NON-CRASH ENGINE COMPARTMENT FIRES
PE08010 · Electrical system:12v/24v/48v battery:cablesopened 4 Feb 2008 · closed 12 Jun 2008
NON-CRASH ENGINE COMPARTMENT FIRES
NHTSA Office of Defects Investigation