This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
full bulletin at NHTSA ↗2017 GMC Acadia powertrain problems
moderate 223 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
When does it fail?
Of the 223 powertrain complaints filed for the 2017 GMC Acadia, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
Powertrain accounts for 32% of every owner complaint on file for this vehicle — the dominant problem area across 12 categories tracked.
Owners have filed 223 powertrain complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
full bulletin at NHTSA ↗This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
full bulletin at NHTSA ↗This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
full bulletin at NHTSA ↗This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The "Shift to Park" issue dominates complaints on the 2017 Acadia. Owners place the shifter in Park physically, but the transmission control module doesn't recognize it—displaying a warning message that won't clear. The engine stays on, electronics remain powered, and the doors won't lock. Owners work around this by jiggling the shifter, shifting back and forth between Drive and Park, or restarting the engine sometimes 10–50 times before it registers. The problem appears between 12,000 and 60,000 miles but recurs after "repair." Dealers have installed band-aid fixes (wiring harness swaps) and replaced the transmission control assembly, but owners report the same failure returning within 26,000 miles. GM issued technical service bulletins (18-NA-297, 19-NA-206) but refused a recall. Repair costs run $600–$800 out of warranty; dealers initially covered repairs under bumper-to-bumper warranty, then denied claims.
Beyond the shifter problem, owners report transmission slipping, hard shifts, and complete driveshaft failures. One owner's driveshaft separated while parking at 10 mph, bending the tire into the wheel well. Recall 17V516000 exists for driveshaft issues but many VINs don't qualify despite identical failures. A handful of owners cite total electrical shutdown at highway speed and automatic emergency braking engaging without warning while using cruise control. One owner experienced alternator failure that killed all systems in three minutes with almost no prior warning—a dangerous situation on a highway.
Same GMC Acadia powertrain reports on nearby years: 2014 · 2015 · 2016 · 2018 · 2019
Failure modes owners describe
Shift to Park Detection Failure
The transmission control module fails to recognize when the gear shifter is physically positioned in Park, displaying a 'Shift to Park' warning message on the instrument panel even though the vehicle is stationary and the shifter is engaged in Park. This prevents the engine from shutting off completely, leaving electrical systems powered and draining the battery.
When: Typically between 12,000–60,000 miles, though can occur as early as 3,000 miles or as late as 89,776 miles; often recurring after initial repair
Symptoms owners cite: Dashboard warning message 'Shift to Park' or 'Action Required – Shift to Park' when vehicle is in Park; Engine will not shut off despite shifter being in Park position; Vehicle electronics remain powered on, draining battery; Lights remain on and door locks cycle on/off; Problem resolves temporarily by jiggling/shaking the gear shifter, shifting to other gears (Reverse, Drive, Neutral) and back to Park, or restarting the engine multiple times (sometimes 10–50+ attempts); Vehicle may slowly roll on inclines despite appearing to be in Park; Intermittent behavior; does not occur every time
Codes mentioned: TSB 18-NA-297, TSB 19-NA-206, Service Bulletin 19-145420
Repairs/costs cited: Dealers have replaced wiring harness (band-aid fix, temporary relief), transmission control assembly (part reference 19-145420), shifter assembly (original part # 84159722, newer part # 13528228), and shifter cable. Owners report costs ranging from $152–$800 out of warranty; in-warranty repairs were covered initially but denials increased as vehicles aged. Multiple owners report the same failure recurring after 'repair' within 26,000–40,000 miles.
Recalls/TSBs owners mention: GM issued TSB 18-NA-297 (December 2018) and TSB 19-NA-206 (September 2019) addressing the issue; parts recommended often on backorder. GM declined recall despite multiple complaints and known defect. Some dealers admitted to owners that the design was flawed and parts were incorrect. Class action lawsuits initiated by owners. Warranty coverage denied once bumper-to-bumper coverage expired. No manufacturer buyback program mentioned.
Engine Stall / Total Power Loss While Driving
Engine suddenly shuts down and all electrical systems fail while the vehicle is at highway speed, with only 3 minutes of warning indicators before complete immobilization. No prior warning signs such as dim lights or hard starting were observed.
When: Occurred while driving at posted highway speed (80 mph); one complaint at approximately 75,000 miles, though attributed to alternator failure
Symptoms owners cite: Multiple warning lights flash on dashboard simultaneously; Power Saver Mode engagement warning; Engine motor turns off completely; All electrical systems fail (windows, door locks, Onstar non-functional); Vehicle can be manually unlocked after multiple attempts to press Start/Stop button; Vehicle immobilized on roadside
Codes mentioned: P0420 (emissions-related, checked hours before incident)
Repairs/costs cited: One case attributed to alternator failure; vehicle towed to garage. No parts or costs cited for other instances of sudden power loss.
Recalls/TSBs owners mention: No manufacturer response documented in complaint narratives for sudden power loss events.
Transmission Hard Engagement & Slipping
Transmission exhibits jerking, downshifting, slipping, and poor acceleration response. Hard engagement on low-gear shifts; vehicle bucking or lunging forward while accelerating; slippage at various speeds.
When: Occurring at 34,000–160,000 miles; one complaint at 13,000 miles with downshift and shift-to-park message simultaneously
Symptoms owners cite: Hard engagement in low gears, especially uphill; Vehicle jerks or downshifts unexpectedly while maintaining speed (20–25 mph); Transmission slipping; inadequate acceleration response despite depressing accelerator pedal; Vehicle shudders or hesitates when attempting to stop (brakes depressed but vehicle fails to respond initially); Bucking or lunging forward while accelerating; Check engine light illumination; Transmission failure requiring replacement
Codes mentioned: P0010 (Camshaft Position Actuator Circuit), P0016 (Crankshaft/Camshaft Position Timing), P0018 (Camshaft Position Timing), P0507 (Idle Control System)
Repairs/costs cited: One case: independent mechanic diagnosed hole in fluid tube caused by wear from support clip; repair was attempted but slippage worsened, requiring full transmission replacement. Another case: dealer replaced camshaft and timing chain, then transmission; check engine light remained on after replacement. One case: transmission failure diagnosed at 13,000 miles; vehicle not repaired.
Recalls/TSBs owners mention: Dealers informed owners that VINs were not included in recall 17V516000 (Powertrain). One owner received referral to NHTSA Hotline. No recall coverage found for most complaints.
Driveshaft Failure & Separation
Intermediate driveshaft fails or partially separates from the vehicle while driving or parking, resulting in loss of motive power and potential for collision.
When: Occurring at 17,000–160,000 miles; one incident at low speed (10 mph) while parking
Symptoms owners cite: Abnormal clicking sound from underneath vehicle; Hesitation before gaining forward momentum while accelerating; Bucking or lunging forward while accelerating; Loss of motive power; vehicle immobilized; CV axle detachment while parking at 10 mph; Front passenger side tire bent inwardly into wheel well; vehicle crashed into curb; No warning lights illuminated in some instances
Repairs/costs cited: One case: independent mechanic diagnosed intermediate driveshaft failing; referred to recall 17V516000. Another case: CV axle detached; owner declined diagnostic fee and vehicle not repaired. Another case: driveshaft fractured; vehicle not repaired.
Recalls/TSBs owners mention: Recall 17V516000 (Powertrain) issued but multiple VINs not included despite matching failure symptoms. Dealers informed owners their VINs did not qualify for the recall. No further assistance provided to owners.
Transmission Clutch Failure
Transmission clutch fails, rendering the transmission unable to engage and requiring full transmission replacement.
When: At approximately 132,000 miles
Symptoms owners cite: Abnormally loud blower motor sound while accelerating; Loss of motive power while driving at 10–15 mph; TPMS warning light illuminated; Transmission shift to neutral required; vehicle had to be pushed to side of roadway
Codes mentioned: TPMS warning
Repairs/costs cited: Independent mechanic diagnosed transmission clutch failure requiring transmission rebuild or replacement; vehicle not repaired.
Recalls/TSBs owners mention: Manufacturer confirmed no recall or warranty coverage available; referred contact to NHTSA Hotline.
Excessive Vibration at Specific RPM & Speed
Vehicle vibrates excessively and erratically at 1400–1600 RPM and at speeds of 55–60 mph, with the transmission seemingly refusing to shift, lasting up to a quarter mile.
When: At 1,390 miles (after strut replacement and motor mount adjustment); persisting at 2,900 miles despite dealer reassurance
Symptoms owners cite: Pronounced excessive vibrations at 1400–1600 RPM; Most pronounced at speeds of 55–60 mph; Transmission appears to refuse to shift; vibration lasts up to quarter mile; Transmission feels as though it will fail; Uncomfortable and erratic vibration despite dealer diagnosis of normal function
Codes mentioned: Bulletin 17109 (recall-related)
Repairs/costs cited: Struts replaced at 1,390 miles; motor mounts adjusted. Lead mechanic at dealer stated vibrations would stop at 2,500 miles due to vehicle 'adjusting to the driver.' At 2,900 miles, vibrations persisted.
Recalls/TSBs owners mention: Dealership performed recall service per Bulletin 17109 but vibrations persisted. Dealer insisted vehicle was functioning normally and safe despite owner's concerns.
Automatic Emergency Braking Malfunction
Automatic emergency braking system engages abruptly and hard for no apparent reason while cruise control is active, creating a sudden braking event.
When: Multiple occurrences while using cruise control
Symptoms owners cite: Automatic emergency braking engages abruptly without driver input; Hard braking without warning while cruise control active; Almost caused several accidents; Unpredictable; can occur at any time during cruise control operation
Repairs/costs cited: Dealer attributed failure to dirty or overheated sensors; no repair documented.
Recalls/TSBs owners mention: GMC acknowledged sensors could become dirty or overheat but provided no technical bulletin, recall, or repair solution.
Airbag System Intermittent Malfunction
Airbag warning light cycles on and off intermittently for extended periods without clear cause or resolution.
When: Starting from vehicle purchase in October 2017; recurring every couple of months over warranty period
Symptoms owners cite: Airbag light turns on and off intermittently; Multiple recurring issues over time; No clear diagnostic indication
Repairs/costs cited: Dealer initially attributed to unplugged sensors due to seat movement; later claimed faulty sensor diagnosis. No documented repair or replacement.
Recalls/TSBs owners mention: Dealer unable to diagnose problem during warranty period; once vehicle out of warranty, dealer offered faulty sensor diagnosis without explanation of root cause.
Synthesized from 223 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 7 most recent
The contact owns a 2017 GMC Acadia. The contact stated that the "Shift to Park" message was displayed on the instrument panel while attempting to park the vehicle. Additionally, there was a constant beeping alert coming from the vehicle during the failure. The contact later discovered that the rear brake lights and reverse lights were illuminated during the failure. A local dealer was contacted…
Vehicle will not shift properly to park when turning the vehicle off. This causes the problem of moving when attempting to turn off the vehicle.
2017 GMC acadia would issue a warning saying vehicle failed to shift to park even though the vehicle was in park. This vehicle defect is known by GMC and their dealerships. A lawsuit is currently pending regarding this issue. GMC has failed to issue a recall and has failed to resolve the issue. We took our vehicle to the local GMC dealership august 2018 due to the issue. The issue started…
Vehicle developed a major shudder and vibration from transmission. There are reports of the symptom in other complaints and a service bulletin released by GM for replacing the transmission fluid only(filter is internal and can only be replaced by removing and disassembling the transmission). When this malfunction is coupled with an EVAP sensor failure, loss of acceleration and engine stall…
When the shifter is placed into park the screen shows "place shifter into park" the radio still works, screen will not turn off, and the car cannot be locked making it unsafe, easy to get into or stolen.
Tl* the contact owns a 2017 GMC acadia. While driving the vehicle, the wheels locked up in 4wd mode. The dealer diagnosed that the wheel differential needed to be replaced. The vehicle was not repaired. The failure mileage was 2,500.
Sudden onset of extensive shuddering/shaking when shifting gears.
Common questions
How serious is the powertrain problem on the 2017 GMC Acadia?
It's a documented issue but not catastrophic. 223 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Across the 147 complaints that reported odometer mileage, most powertrain failures cluster between 25,000 and 53,000 miles, with the median around 36,128. A quarter of owners report trouble before 25,000; a quarter make it past 53,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.