While driving 45mph on a straightaway highway , three warnings came on "reduced engine power" "service stabilitrak" and "traction control off" then the vehicle lost power cars behind me and nowhere to pull off the car had lost power it would not get over fifteen MPH. Taking it into be serviced .I have already had the transmission replaced
2007 GMC Acadia powertrain problems
moderate 162 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
162
Recalls
0
Avg fix
$2,500
2crashes
2fires
1injury
When does it fail?
Of the 162 powertrain complaints filed for the 2007 GMC Acadia, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
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.
What stands out
Powertrain accounts for 38% of every owner complaint on file for this vehicle — the dominant problem area across 12 categories tracked.
Owners have filed 162 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.
The failure pattern owners describe
Buyer takeaway: The 2007 GMC Acadia has well-documented transmission waveplate failures starting around 50,000–80,000 miles, often leaving owners stranded or in dangerous acceleration situations and costing $3,400–$5,900 to repair. Power steering, electrical systems, and timing chain issues compound the ownership risk, particularly if you're out of warranty or miles.
The 2007 GMC Acadia powertrain complaints cluster around transmission failure, occurring predominantly between 48,000 and 131,000 miles. Owners describe the transmission losing power suddenly during acceleration, slipping or refusing to shift gears, staying locked in one gear, or reverting to neutral when the accelerator is pressed—with RPMs climbing but no forward motion. Many report the transmission "hot" warning message appearing before complete loss of function. A recurring theme is the waveplate component failing, which owners consistently identify from online research and dealer confirmation. Owners also report harsh jerking during shifts, difficulty accelerating from stops (sometimes requiring a restart to regain function), and reverse failing intermittently or completely. Some vehicles exhibit these issues intermittently, clearing temporarily after shutdown and restart, which led dealerships initially unable to diagnose the problem. Secondary complaints include timing chain wear causing whining noises and metal debris in the engine (leading to engine replacement in one case), power steering stiffness, and electrical gremlins (intermittent wipers, headlights, turn signals, radio, locks). A few owners mention earlier engine issues resolved through recalls but at significant out-of-pocket cost due to warranty limitations. The safety concern is acute: owners were stranded in traffic, unable to accelerate during merges, or experienced sudden loss of power on highways at 65+ mph, creating near-miss collision scenarios and panic among drivers with young children in the vehicle.
Same GMC Acadia powertrain reports on nearby years: 2008 · 2009 · 2010
Failure modes owners describe
Transmission waveplate failure
The waveplate (also called wave plate), a friction component in the transmission, fractures or warps, causing the transmission to lose engagement and fail to transmit power. Owners cite poor heat treatment during manufacturing and use of a substandard $1.69 part instead of a $39 part as the root cause, per dealer statements in narratives.
When: 48,000–131,000 miles; typically 50,000–80,000 miles cluster
Symptoms owners cite: Vehicle will not shift into or out of gears; Stuck in neutral despite accelerator input; RPMs climb but no motion; Stuck in one gear (1st, 2nd, or 3rd) unable to upshift or downshift; Transmission slips or jerks during shifts; Reverse fails or sticks intermittently; Engine light and 'transmission hot, idle engine' warning message; Problem clears temporarily after vehicle restart; Loud grinding, crunching, or whining noise from transmission
Codes mentioned: P0700 Powertrain Control System Malfunction, P0716 Transmission Fluid Temperature High, P0752 Shift Solenoid A Stuck On, P0797 Pressure Control Solenoid C Stuck On, P0017 Camshaft/Crankshaft Timing Misalignment, 7EA, 7E8
Repairs/costs cited: Waveplate replacement requires full transmission rebuild or replacement. Owners cite repair costs of $3,400–$5,890 for new transmission; $3,950–$4,900 for rebuild. Some repairs performed under extended warranty; others out-of-pocket. One owner was 3,000 miles over powertrain warranty (100,000 miles) and denied coverage, later receiving partial reimbursement after a recall was issued. GM issued a reimbursement program for certain owners under 10 years/120,000 miles, but many fell just outside eligibility.
Recalls/TSBs owners mention: GM issued a transmission reimbursement program (mentioned 3/2015 in one narrative) covering some 2007 Acadia owners under 10 years and 120,000 miles. One owner received half reimbursement after initially being denied. A software/transmission reflash procedure was performed multiple times on some vehicles without lasting effect. GM issued a camshaft recall and reimbursed affected owners. Dealers confirm GM is aware of the waveplate defect affecting millions of 2007–2010 models but chose not to issue a full recall due to volume. No manufacturer-initiated recall for transmission waveplate identified in narratives.
Transmission engagement delay and harsh shifting
Transmission hesitates to engage when accelerating from a stop, requiring several seconds of pedal pressure before sudden violent engagement at high RPMs, creating a 10,000 RPM surge and jerking sensation. Owners describe it as the transmission 'not immediately responding' or needing a reset.
When: Various speeds; most common at stops and during acceleration; some reports at 30–40 mph shaking range
Symptoms owners cite: Several-second delay between pressing accelerator and transmission engaging; RPM surge to 4,000–5,000 before engagement; Hard jerking or violent shift from 1st to 2nd gear; Vehicle shakes and jerks like a manual transmission being learned; Transmission reflashing does not provide permanent fix; issue recurs after multiple reflashes
Codes mentioned: P0700 (general powertrain malfunction)
Repairs/costs cited: Dealership response: transmission reflash/reprogramming performed, but issue recurs. One owner reports dealer's own service manager stating the problem is 'scary' and 'very common' but not fixed by GM. Dealer told owner GMC considers this 'normal' and owner must 'live with it.' No permanent repair documented in narratives.
Recalls/TSBs owners mention: GM issued a software update to 2007 models (mentioned in one narrative as of 9/17/07); 2008 models came with updated software from assembly. Transmission reflash procedure offered but acknowledged as temporary by owners and dealers. One dealer stated GMC's position: 'Here is the fix and now you live with it.'
Timing chain wear and engine failure
Timing chains wear prematurely, causing whining noise, metal debris in the engine, and loss of power. In one case, camshaft failure sent metal into the motor, requiring full engine replacement.
When: Earlier model year issues; one case at ~103,000 miles; one case reported as Dec prior to main complaint
Symptoms owners cite: Whining noise from engine; Metal debris detected in engine; Loss of power while driving; Engine light activation
Codes mentioned: P0017 Camshaft/Crankshaft Timing Misalignment
Repairs/costs cited: One owner: engine replaced at dealer cost ~$5,000 (owner paid $3,333 out-of-pocket initially, received half reimbursement after recall). Another owner: all new timing chains installed at 103,000 miles cost not specified.
Recalls/TSBs owners mention: GM issued a camshaft recall after complaint. Owner received 50% reimbursement of repair cost after recall was issued, not full reimbursement. Second owner: powertrain warranty applied but owner was 3,000 miles over limit and received partial (1/3) coverage from GM.
Reverse gear failure or malfunction
Reverse gear refuses to engage, engages intermittently, or engages only after multiple restart cycles. In one severe case, reverse shifted into forward violently.
When: Various mileages; intermittent early, then persistent
Symptoms owners cite: Reverse will not engage; shift lever moves but vehicle stays in neutral; Requires multiple shut-offs and restarts to engage reverse; Reverse sticks intermittently, then fails completely; In one case: reverse engaged but propelled vehicle forward violently instead of backward, nearly hitting a house
Codes mentioned: P0700 (general powertrain)
Repairs/costs cited: Transmission rebuild or replacement required. One case: reverse suddenly and dangerously reversed direction of motion; vehicle towed immediately. Another case: reverse failed during three-point turn; requires transmission service.
Power steering failure and stiffness
Power steering becomes difficult to turn or stiffens unexpectedly, especially in wet conditions or after water ingress. Owners lose control in rain and water-prone driving.
When: Throughout vehicle life; some cases noted early
Symptoms owners cite: Power steering stiffens, making wheel difficult to turn; Loss of control when wet or after water gets under truck; Noise while turning wheel; Steering works after fluid top-up but reverts
Repairs/costs cited: Power steering recall mentioned in one narrative; protection added behind front wheels per recall. Repeated failures indicate temporary fix. One owner: replaced power steering module.
Recalls/TSBs owners mention: Recall issued; protective shields installed behind front wheels. Owners continued to report problems post-recall.
Electrical system intermittency and water damage
Multiple electrical components fail intermittently or after sunroof leak allows water into electrical systems. Headlights, turn signals, wipers, radio, power windows, locks, climate control, and dashboard lights behave erratically—working sometimes, not others.
When: Reported throughout vehicle ownership; sunroof leak is recurring issue
Symptoms owners cite: Headlights and turn signals fail sporadically or shut off while driving; Windshield wipers operate randomly or not at all; Radio will not shut off when engine off or shuts off unexpectedly; Power windows, locks, and climate control work intermittently; Service airbag light and dashboard warning lights illuminate; Sunroof leaks water above driver's area, draining into cabin and electrical systems
Repairs/costs cited: Dealership diagnostic tests show no error codes despite obvious failures. One owner attempted to clear sunroof drain tubes but found no blockage. No permanent repair found in narratives; owner stated unable to afford repairs and scared to drive vehicle at night due to headlight failures.
Recalls/TSBs owners mention: One narrative mentions GM issued recalls for sunroof leak but owner states leak issue has been known for years with 'almost 100 complaints.' No resolution provided in narratives.
Driveshaft safety ring failure
The safety ring holding the driveshaft in place failed, causing the front portion of the driveshaft to drop from the vehicle while traveling at speed, resulting in total loss of power.
When: July 2007 (early in vehicle life, ~vacation usage)
Symptoms owners cite: Sudden loss of power while driving at speed in traffic; Driveshaft hanging from forward position to roadway; No warning before failure
Repairs/costs cited: Replacement part was on indefinite back order at time of complaint. No repair cost documented.
Stabilitrak and ABS system malfunction
Stabilitrak errors occur, causing vehicle speed to be limited to 35 mph and rough braking/jerking. Errors recur despite repair attempts.
When: 62,000 miles in one case; recurring in another at various intervals
Symptoms owners cite: Stabilitrak error message and service lights illuminate; Vehicle speed limited to 35 mph max; Rough braking with ABS kicking in and jerking when braking; Metal-on-metal scraping sound during braking (initially thought to be brake pads but was ABS engagement); Error recurs 10 days after repair despite cam exhaust position sensor replacement
Codes mentioned: Stabilitrak/traction control fault codes (not specifically listed)
Repairs/costs cited: Cam exhaust position sensor replaced at cost of $370.51 in one case; repair worked for 1 week then recurred. Strut replacement attempted without resolution.
Synthesized from 162 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
While traveling at 45 MPH, and with no warning (weird shifting, etc) the transmission completely failed. After being lied to by the dealership and gm, I did my own research and found that this is a common problem with this model year, so much so that gm has created a special program to fund part of the repair if the vehicle is out of warranty. (wave plate failure in the transmission). This…
Had powertrain trouble with your 2007 GMC Acadia?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2007 GMC Acadia?
It's a documented issue but not catastrophic. 162 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 143 complaints that reported odometer mileage, most powertrain failures cluster between 62,850 and 107,085 miles, with the median around 83,000. A quarter of owners report trouble before 62,850; a quarter make it past 107,085. 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.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/GMC/Acadia.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.