2003 Gmc Denali problems, complaints & recalls
Most-reported problem areas: Vehicle Speed Control (4) · Power Train:automatic Transmission (3) · Steering (2)
🧭 Reliability snapshot
Compared against other Gmc Denali model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
25 NHTSA complaints that reported an odometer reading.
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (130)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2025-07-18 · PIP5601C · Service Bulletin/Repair Instructions
this pi communicates the requirement to provide a pico file to receive diagnostic assistance from tac.
Unknown Or Other 2024-09-06 · PIT3271P · Service Bulletin/Repair Instructions
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 s
Electrical System 2024-08-26 · General Communication · Service Campaign
vehicle wide programming (vwp) is a new process to update software on gm vehicles. it provides the ability via a single selection within techline connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). the updating of modules is com
Power Train 2024-07-24 · 24-NA-141 · Service Bulletin/Repair Instructions
gm is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. the damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. this bulletin advises the dealers to be more careful not to damage the transmissions durin
Fuel/Propulsion System 2024-06-28 · 16-NA-383 · Service Bulletin/Repair Instructions
this service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, crank no start, extended crank or misfire, mil with dtcs, and explains how top tier fuels should be used to reduce carbon build-up.
Unknown Or Other 2024-06-17 · 18-NA-099 · Service Bulletin/Repair Instructions
this bulletin provides information for use on a product assistance claim (pac), which is formerly known as a product allegation resolution (par) claim.
Showing the 6 most recent of 130 bulletins. Search all of them free at nhtsa.gov.
What owners report
2019-01-08 · Steering · 120,000 mi · 💥 crash“i have had the break/steering fluid booster replaced 3 times in a 6 month period. how gmc can call this a "problem" but not a safety issue is beyond me. i have looked it up and thousands have had problems with this along with alike vehicles from the same years. the breaks and steering lock up while driving especially around turns. it is extreme…”
2016-03-15 · Exterior Lighting · 12,000 mi“tl* the contact owns a 2015 (na) gmc denali. the contact stated that the exterior lighting was dim. the vehicle was taken to a dealer where it was diagnosed that the headlight bulbs failed and needed to be replaced. the vehicle was repaired, but the failure recurred. the manufacturer was notified of the failure. the failure mileage was approximatel…”
2014-10-29 · Tires:sidewall · 120,000 mi“tl* the contact owns a 2003 gmc denali equipped with michelin ltx ms20 tires, size: lt245/75r16. the contact stated that all four tires cracked on the sidewall. the contact also stated that all the tires had tread separation and loss of air pressure. the vehicle was not diagnosed or repaired. the manufacturer was notified of the failure. the vehic…”
2014-06-04 · Service Brakes · 63,000 mi“on june 4, 2014, driving on a clear, dry and sunny day in my 2003 gmc sierra denali pickup truck. on virginia drive heading eastbound in montgomery county, pa, at 32 mph; with normal braking action heading into a curve, the brake pedal surprisingly went to the floor and experienced loss of braking. fortunately i was able to negotiate the turn, narr…”
2014-02-21 · Vehicle Speed Control · 75,000 mi“after just a few years of ownership, my 2003 denali, which i purchased brand new, started to have "power down" issues. while driving, the vehicle would just loose power and i would have to pull over and restart the vehicle. gmc has always acted as if it was not a big deal and have offered many expensive solutions. early on i tried their recommen…”
2013-07-16 · Vehicle Speed Control · 163,000 mi“i am filing a complaint due to a reduced engine problem and stability control which keeps enabling me to drive the vehicle. once this light and power reduces i need to pull over from my destination and turn engine off completely. i count about ten seconds in order to restart the vehicle... only to start it and having it reduce again. several lights…”
2012-04-18 · Service Brakes, Air:supply:hoses, Lines/Piping, And Fittings · 47,500 mi“within about 10 miles of a moderate braking situation and reaching home, brake pedal became progressively softer at each successive stop until complete brake failure occurred near home. the emergency brake was used to slow and stop vehicle in driveway (home). right front steel brake line was found to have burst due to extensive rust/corrosion. …”
2011-05-23 · Fuel System, Gasoline“i have a 2003 yukon denali and when it hit the 65,000 miles mark the fuel gauge stopped working leaving me to tell how much gas i had left using the automatic computer telling you how many miles to empty. next the oil gauges stopped working. finally reaching 80,000 miles my speed odometer quite working leaving me to not knowing the speed i am trave…”
2011-03-28 · Vehicle Speed Control · 130,000 mi“tl* the contact owns a 2003 gmc denali. the contact was driving approximately 40 mph when the vehicle stalled without warning. the contact stated that after a few minutes, the vehicle was restarted yet the failure persisted. the vehicle was towed to the dealer where the technician could not diagnose the failure. the failure persisted intermittently…”
2010-05-03 · Service Brakes, Hydraulic · 17,000 mi“brake failure due to rusting out of main brake line to rear of vehicle. *tr…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.