2018 GMC Acadia

The 2018 GMC Acadia is a mid-size SUV that offers a comfortable ride and ample space for passengers and cargo. Engine options include a 2.5L inline-4 producing 193 horsepower and 188 lb-ft of torque, and a 3.6L V6 delivering 310 horsepower and 271 lb-ft of torque. The V6 is the more popular choice due to its superior performance. Both engines are paired with a 6-speed automatic transmission. Owners generally appreciate the Acadia’s stylish design and quiet cabin, but some dislike the smaller third-row seat compared to previous generations and the occasional reports of electronic glitches.

Engine

2.5L Inline-4

• Excessive Oil Consumption
  • Description/Symptoms: Some owners have reported the 2.5L engine consuming oil at a higher than expected rate. Symptoms include needing to add oil frequently between oil changes and the low oil pressure light illuminating.
  • Solution: Some dealers may perform an oil consumption test to determine if it falls within GM’s acceptable range. If excessive consumption is confirmed, piston ring replacement may be necessary.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

3.6L V6

• Timing Chain Wear/Failure
  • Description/Symptoms: Premature wear or failure of the timing chain can occur. Symptoms include a rattling noise upon startup, check engine light, and potential misfires.
  • Solution: Replacement of the timing chain, guides, and tensioners.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found
• High Pressure Fuel Pump Failure
  • Description/Symptoms: The High Pressure Fuel Pump may fail. Symptoms include hard starting, long cranking times, lack of power, check engine light, and potential stalling.
  • Solution: Replacement of the High Pressure Fuel Pump.
  • Estimated Cost to Fix: $600 - $1000+
  • Recalls: None Found

Transmission

6-Speed Automatic (All Engines)

• Harsh Shifting/Shuddering
  • Description/Symptoms: Some owners have reported rough or delayed shifting, particularly between certain gears. A shuddering sensation may also be felt during gear changes.
  • Solution: A software update to the transmission control module (TCM) may resolve the issue in some cases. In other situations, valve body replacement or complete transmission replacement might be needed.
  • Estimated Cost to Fix: $100 (Software Update) - $4,000+ (Transmission Replacement)
  • Recalls: None Found

Suspension

• Premature Wear of Struts/Shocks
  • Description/Symptoms: Premature wear of the front struts or rear shocks can cause a bouncy ride, reduced handling, and unusual noises (clunking or squeaking) when going over bumps.
  • Solution: Replacement of the affected struts or shocks.
  • Estimated Cost to Fix: $300 - $800+ per pair (struts or shocks)
  • Recalls: None Found

Electrical

• Battery Drain Issues
  • Description/Symptoms: Owners have reported issues with the battery draining quickly, especially if the vehicle sits for an extended period. This can lead to difficulty starting the vehicle.
  • Solution: Potential causes include a parasitic drain from a faulty module or accessory. Diagnosis involves testing for parasitic draw and isolating the source of the drain. Replacement of the faulty module or component is necessary.
  • Estimated Cost to Fix: $100 - $1,000+ (Depending on the source of the drain)
  • Recalls: None Found
• Infotainment System Problems
  • Description/Symptoms: The infotainment system may experience glitches such as freezing, slow response times, screen going black, or inability to connect to Bluetooth.
  • Solution: A software update to the infotainment system may resolve some issues. In more severe cases, replacement of the infotainment unit might be necessary.
  • Estimated Cost to Fix: $0 (Software Update) - $1,000+ (Infotainment Unit Replacement)
  • Recalls: None Found

Exterior

• Water Leaks in Liftgate Area
  • Description/Symptoms: Water leaks into the cargo area, often around the liftgate seal or rear window. This can lead to musty smells and potential damage to interior components.
  • Solution: Inspect and replace the liftgate seal or rear window seal as needed. Ensure proper drainage around the liftgate.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Interior

• Air Conditioning Issues - Weak Airflow/Cooling
  • Description/Symptoms: Reduced airflow from the A/C vents or inadequate cooling, even when the system is set to maximum.
  • Solution: Check the cabin air filter for blockage and replace if necessary. Inspect the A/C compressor, refrigerant levels, and blower motor. Repairs may involve recharging the refrigerant, replacing the compressor, or fixing the blower motor.
  • Estimated Cost to Fix: $50 (Cabin Air Filter) - $1,000+ (Compressor Replacement)
  • Recalls: None Found

Summary: The 2018 GMC Acadia has a range of potential issues, with engine and transmission problems being the most concerning due to their potential severity and cost. Electrical glitches and suspension wear are also common complaints. While some issues are relatively minor, others, like timing chain or transmission failures, can result in significant repair bills. Buyers should be aware of these potential problems and thoroughly inspect any used Acadia before purchasing.