The 2025 Canyon AT4X shares the GMT31XX platform and 8-speed automatic with the Colorado/Silverado 1500, pairing it with the 2.7L turbo four-cylinder. Early reports flag transmission adaptives, turbo oil consumption, and electronic shift module glitches—hallmarks of GM's push for efficiency in mid-size trucks.
Symptoms: Hard 2-3 or 3-4 upshifts, especially when cold, Delayed downshifts or hunting between gears under light throttle, Check Engine Light with P0776 (pressure control solenoid) or P0729 (gear ratio incorrect), Relearns required after battery disconnect or TCM updates
Fix: Most cases resolve with TCM reflash and transmission fluid exchange (factory fill can shear quickly). Persistent issues may need valve body replacement or shift solenoid pack. 2.5-4 hrs labor for fluid service + reflash; valve body swap is 6-8 hrs plus parts.
Estimated cost: $400-2,800
2.7L Turbo Oil Consumption & PCV System Fouling
Occasional · medium severity
Typical onset: 20,000-60,000 mi
Symptoms: Oil level drops 1-2 quarts between changes (5,000 mi intervals), Blue smoke on cold start or under boost, P0171/P0174 lean codes with oil residue in intake tract, Turbo wastegate rattle or sluggish spool-up
Fix: GM Technical Service Bulletin covers PCV valve and oil separator cleaning/replacement. Severe cases require turbo reseal or replacement if bearing seals fail. PCV service is 1.5 hrs; turbo replacement is 5-7 hrs.
Estimated cost: $250-3,200
Transmission Oil Cooler Line Corrosion & Leaks
Occasional · medium severity
Typical onset: 30,000-70,000 mi
Symptoms: ATF drips near front of engine or below radiator, Transmission running hot (240°F+) on highway pulls or towing, Pink fluid pooling after overnight park, Low fluid warnings on instrument cluster
Fix: Steel cooler lines rust at crimp fittings or where they contact frame rails. Requires line replacement and trans fluid top-up. 2-3 hrs labor; often bundled with full fluid exchange if contamination suspected.
Estimated cost: $500-1,200
Torque Converter Clutch (TCC) Solenoid & Shudder
Common · low severity
Typical onset: 15,000-50,000 mi
Symptoms: Vibration or shudder at 40-50 mph under light throttle (feels like rumble strips), P0742 code (TCC stuck off), Smooths out if you accelerate hard or shift to manual mode, Worse after fluid gets hot
Fix: Early-production transmissions had TCC calibration issues and friction material breakdown. TSB-based reflash helps; persistent cases need TCC solenoid or full torque converter replacement. Solenoid swap is 4-5 hrs (pan drop, valve body access); converter is 10-12 hrs (transmission removal).
Symptoms: P0327/P0332 knock sensor circuit low codes, Loss of power under boost, especially uphill or towing, Engine runs but feels flat, MPG drops 2-3 combined, No actual audible knock or pinging
Fix: Sensor wiring chafes on engine harness near cylinder head or connector corrosion from heat cycling. Replacement sensor plus harness inspection/repair. 1.5-2 hrs labor; sensor is valley-mounted requiring intake plenum removal.
Estimated cost: $350-650
Transmission Control Module (TCM) Software Glitches & Limp Mode
Rare · high severity
Symptoms: Sudden loss of all gears except 2nd or 4th (limp mode), U0101 or P0700 codes with no other DTCs, Transmission shifts normally after key cycle, then faults again randomly, No physical damage or fluid issues found
Fix: Early TCM software versions had CAN bus communication faults. Dealership-only reflash required (not available at most independents). If reflash fails, TCM replacement and VIN programming. 1 hr for reflash; 2-3 hrs for TCM swap.
Estimated cost: $150-1,800
Owner tips
Change transmission fluid at 30K intervals if towing or off-roading—factory 'lifetime' fill doesn't cut it in the AT4X's duty cycle.
Use 0W-20 or 5W-30 full synthetic religiously; the 2.7L turbo is sensitive to oil quality and PCV sludge forms fast with conventional oil.
If you get a harsh shift or limp mode, pull codes immediately—these transmissions set soft codes that self-clear and leave you guessing.
Avoid extended idling in 4WD Auto on pavement; the transfer case and rear diff can overheat, stressing seals and fluid.
Solid truck if you get one with updated TCM calibration and stay on top of trans fluid; early examples have teething pains typical of first-year GM powertrains, but the bones are good—just budget $1K/year for transmission TLC.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: AGM battery required for start-stop system; H6 group may also fit
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Every control module on the 2023-2026 GMC Canyon AT4X — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Engine compartment, driver side fender well, behind headlamp assembly
🔧 Autel MaxiSys or GM SPS2
⚠️ Controls LED headlamps, DRL, and automatic high beam; requires configuration for headlamp type
Differential Control Module (DCM)no coding▸ programming details
📍 Integrated with TCCM; no separate module
⚠️ Front and rear electronic locking differentials controlled by TCCM; no separate module
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Coupe, Corvette Convertible E-Ray, Equinox, Silverado 1500, 2500, 3500, Silverado EV, Suburban 1500, Tahoe, Traverse, GMC Acadia, Hummer EV Pickup, Hummer EV SUV, Sierra 1500, 2500, 3500, Sierra EV, Terrain, Yukon, and Yukon XL vehicles. The radio may not have been set to the correct status to download the electronic owner's manual during production. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, “Occupant Protection.”
Consequence: Without an owner's manual to consult, owners may not know how to safely use and operate the vehicle, increasing the risk of injury in a crash.
Remedy: Dealers will reset the vehicle radio, which will facilitate automatic download of the electronic owner’s manual, free of charge. Owner notification letters were mailed April 16, 2026. Owners may contact GM customer service at 1-866-467-9700, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-333-4223. The manufacturer's number for this recall is N252540430. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 26, 2026.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 25V856000
2025-12-11
General Motors, LLC (GM) is recalling certain 2024–2026 GMC Canyon AT4X AEV vehicles. Incorrect sensing and diagnostic module (SDM) software may cause a second stage passenger air bag deployment when only a first stage is intended. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 208, “Occupant Crash Protection."
Consequence: An air bag that deploys improperly increases the risk of injury in a crash.
Remedy: Dealers will update the SDM software, free of charge. Owner notification letters were mailed January 30, 2026. Owners may contact GMC customer service at 1-800-462-8782. GM's number for this recall is N252533510. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on December 11, 2025.
Performance
Horsepower
310hp
Torque
430lb-ft
0–60 mph
6.8sec
Quarter mile
15.2sec
Top speed
112mph
Fuel economy (EPA)
City
17mpg
Highway
17mpg
Combined
17mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
7,700lb
Payload
1,578lb
Curb weight
5,100lb
EPA class
Standard Pickup Trucks 4WD
Wiper blades
AT4X trim uses same 24-inch blades as other third generation Canyon models. Pickup truck body style has no rear wiper.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2025 GMC Canyon AT4X 2.7L I4 Turbo and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.