2024 GMC Canyon Problems

What owners report

Owner complaints for this model year are dominated by one early-life lighting problem: LED headlights that briefly flicker off and back on while driving or parked, often starting within the first few hundred miles. Remaining reports are more scattered and cover brakes, coolant leaks, engine power loss and driver-assist braking, generally at low mileage because most vehicles are still new. Complaints describe repeated dealer visits, back-ordered parts and, for the headlights, a period in which no repair was available.

1. 1
   Exterior lighting

   Headlights flicker off and back on

   • 138 complaints (67%)
   • median 162 mi at 0.9 yrs old (4 state mileage, few)
   • filed 2024

   Complaints describe the LED headlights and daytime running lights briefly dropping out and coming back on every few minutes, whether the lights are on automatic or manual and whether the truck is moving or parked. Owners say other drivers read the flicker as a signal, flashing back, pulling over or braking, and some report a single lamp going dark entirely. Many state the dealer confirmed the condition and that a control module replacement or software update did not resolve it, with some waiting on back-ordered headlight assemblies. Mostly reported within the first few hundred miles on new trucks, often within days of purchase, and frequently at night.

   Recall 24V673000

   What to check: Drive the truck at night or with the lights manually on and watch for a brief dropout every couple of minutes. Ask whether the headlight recall 24V673000 was completed and whether any module or assembly replacement was already attempted.

   2 excerpts from owner complaints in NHTSA records

   “The headlight assemblies has a random blinking, flashing, flicker, on/off problem. This causes people to think I am either flashing them or blinking my light at them. Major safety concern!! GM is aware of this issue and does not have a fix. I requested a different vehicle to drive until they fix this safety issue and was denied.”

   NHTSA complaint #11612369, filed 2024-09

   “My headlights keep flickering immerdiently, it doesn't matter if they are on auto or manually. I called the dealership I purchased it from and they said there is nothing they can do until they receive a resolution from GMC. This poses a safety hazard at night. Not only that, people keep thinking I am flashing my lights at them.”

   NHTSA complaint #11612544, filed 2024-09
2. 2
   Brakes

   Brake pedal hard, vehicle slow to stop

   Mentioned in 6 of 60 sampled complaints

   Owners describe pressing the brake pedal and finding it stiff, with the truck not slowing as expected in traffic or approaching a light, sometimes alongside ABS and traction control warnings. Complaints mention diagnosis of the brake master cylinder, ABS control module or a wiring fault, with parts reported as back-ordered and repairs delayed. Reported at low mileage, from a few hundred miles up to around 11,000 miles.

   What to check: Ask for any brake or ABS service history and check that no warning lamps stay lit after startup; have a mechanic inspect the master cylinder and ABS module before purchase.

   2 excerpts from owner complaints in NHTSA records

   “I purchased my truck with 5 miles on the speedometer in Anchorage AK 4/7/2024. In May 2024, the engine idled rough and transmission shifted hard, I was told me it was normal, and I would have to wait 2 yrs to make a transmission appointment. In June 2024 approaching a green light, approximately 35 mph, the brakes locked, I had no control over the steering and it left a 5 foot skid mark. I had a painful neck and headaches. The shop said they couldn’t make it do it again. …”

   NHTSA complaint #11766560, filed 2026-09

   “Vehicle was brought in 5/18/24 for check engine light Dealer eventually found broken wire in headliner on right side Dealer repaired wire and I picked up vehicle 5/22/24. Vehicle was brought in 7/29/24 for park assist code dealer found short in wire. Dealer stated that to fix wire would require taking cab and bed off frame. Dealer ran a new wire along frame to avoid fixing properly. Vehicle picked up 8/1/24. Vehicle brought in 9/10/24 for a variety of sensors activated. …”

   NHTSA complaint #11618330, filed 2024-10
3. 3
   Engine

   Coolant leak at upper radiator hose

   • 8 complaints (4%)
   • typically at 2.3 yrs old
   • filed 2025–2026

   Complaints describe coolant loss from the upper radiator hose connection, sometimes noticed as a sweet smell, fluid under the truck or the cooling fan running at full speed, with the check engine light coming on only once the level is low. Owners report the repair is a hose and connector replacement, and some note the coolant reservoir was found nearly empty. Mostly reported between roughly 22,000 and 31,000 miles.

   1 related service bulletin

   What to check: Check the coolant level and look for residue or staining at the upper hose connection, and ask whether the radiator hose special coverage has been applied.

   2 excerpts from owner complaints in NHTSA records

   “Radiator Hose began to leak coolant. Faulty radiator hose. This could have caused engine failure and potentially caused an accident or may have put others at risk for hazards. No warning other strange sound. Inspected by authorized dealers service center.”

   NHTSA complaint #11722277, filed 2026-03

   “Coolant Leaking at 22K miles, smell of coolant, check engine light on and off 2X's. Coolant evidence on driveway and in engine cabin. Known condition for GM Model. No parts available for replacement. No recall for issue.”

   NHTSA complaint #11722659, filed 2026-03
4. 4
   Engine

   Loss of power, warning messages while driving

   Mentioned in 4 of 60 sampled complaints

   Owners report the truck dropping into reduced power, sometimes with service power steering or reduced acceleration messages and a check engine light, occasionally while accelerating into traffic or at highway speed. Complaints describe dealer inspections that found no stored fault or returned the truck as operating normally. Reported at low to moderate mileage, in some cases within the first several months of ownership.

   2 related service bulletins

   What to check: Ask whether any check engine light or reduced-power events were diagnosed, and scan for stored codes before buying.

   2 excerpts from owner complaints in NHTSA records

   “We were traveling not once, but twice at a high rate of speed (75/80mph the legal limit) the vehicle gave one message: Service power steering next message: reduced acceleration. The check engine light turned on, the truck itself jerked and we almost lost control of the vehicle (both times) on the highway. We were thankfully able to pull over and pull to a complete stop. The vehicle was still on, it still ran but I saw an autozone close by both times and received a code for the check engine light. …”

   NHTSA complaint #11656178, filed 2025-04

   “Vehicle whole system was non existent. No interior lighting, no door chime when opened, no response. Mechanic took a look and found alternator not good. It’s not charging the battery and advised me to tow it to warranty repair shop. Advised me if I were driving and vehicle died I would not have power or control of vehicle and cause serious injury or death. Lucky I was parked at home and attempted to start vehicle to leave home. No repairs done yet, vehicle is still at home waiting for an appointment.”

   NHTSA complaint #11641415, filed 2025-02

Buying note. The most consistent complaint for this model year is the headlight flicker, so confirm the recall and any follow-up repair are documented before purchase. Beyond that, ask for brake, coolant and warning-light history and verify the truck's service records, since many reports come from very low-mileage vehicles still under warranty.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.