2007 GMC C4500 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 2007 GMC C4500, 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
- Engine133.3%
- Fuel system133.3%
- Transmission133.3%
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
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
TRUCK LOST ALMOST ALL POWER AND BARLEY MOVED ITSELF FROM THE TRAVEL LANES TO THE SIDE OF THE ROAD, HAD TO BE TOWED AND AFTER A WEEK IN THE SHOP! AT MY BUSINESS LOSS .A CRANK SENSOR WAS DETERMINED TO BE FAULTY,THEN AN E.G.R VALVE AND FINALLY REPLACED THE P.C.M. CHECK ENGINE LIGHT STILL ON AND OFF AND STILL WEAK ON POWER. FUEL USAGE IS HORRIBLE MOST OF THE TIME 6 -7 MPG. TRUCK CURRENTLY TOWED TO ANOTHER DEALER FOR A TRANSMISSION PROBLEM, IT WONT MOVE!! I FOUND TRANS TO BE ALMOST OUT OF FLUID. I CHECK FLUIDS REGULARLY. TRUCK HAS 16K ON IT NOW. AND THIS IS THE SECOND TOW, THE FIRST AT 2,000 MILES. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
VEHICLE HAS COMPLETE FUEL SYSTEM FAILURE. IN TALKING TO DSU IN PORTLAND, THEY TOLD ME THAT THIS IS A COMMON PROBLEM IN THIS YEAR OF VEHICLE AND THAT A CHECK VALVE IN THE FUEL PUMP DISINTEGRATES AND DESTROYS THE ENTIRE FUEL SYSTEM. THEY TOLD ME THAT GM KNOWS ABOUT THIS ISSUE, HAS CHANGED THE CHECK VALVE IN NEWER INJECTION PUMPS BUT WILL NOT WARRANTY AND OR RECALL THESE PUMPS. THIS CAUSES A $12,000 REPAIR.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Transmission
Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.
From owner reports, verbatim
TRUCK LOST ALMOST ALL POWER AND BARLEY MOVED ITSELF FROM THE TRAVEL LANES TO THE SIDE OF THE ROAD, HAD TO BE TOWED AND AFTER A WEEK IN THE SHOP! AT MY BUSINESS LOSS .A CRANK SENSOR WAS DETERMINED TO BE FAULTY,THEN AN E.G.R VALVE AND FINALLY REPLACED THE P.C.M. CHECK ENGINE LIGHT STILL ON AND OFF AND STILL WEAK ON POWER. FUEL USAGE IS HORRIBLE MOST OF THE TIME 6 -7 MPG. TRUCK CURRENTLY TOWED TO ANOTHER DEALER FOR A TRANSMISSION PROBLEM, IT WONT MOVE!! I FOUND TRANS TO BE ALMOST OUT OF FLUID. I CHECK FLUIDS REGULARLY. TRUCK HAS 16K ON IT NOW. AND THIS IS THE SECOND TOW, THE FIRST AT 2,000 MILES. *TR
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 .