P0016 on GMC TERRAIN
What P0016 Means on Your GMC TERRAIN
Real GMC TERRAIN Owner Reports (Source: NHTSA Complaints Database)
"I bought my 2010 GMC Terrain SLE at 160,000. It had a rough start up but the dealer said it was because it was an older car and been sitting for a while. The rough start up never stopped even after replacing the catalytic converter because of code P0420."
"Yet again, another costly engine repair. car would not accelerate properly, engine seemed to be back firing. then check engine light came on (code p0016). gmc dealer said the timing chains needs to be replaced. $2300. yet, they will create a recall for a seat. but not an unsafe engine."
"I own a 2015 GMC Terrain, 4D. Vehicle started displaying error P0016 during the evening of 07/27/2025, the following day the vehicle stopped working. I towed the vehicle to three different mechanics. All three mechanics indicated that the engine needs to be replaced."
"I had a message flash that said the power to the engine was reduce. Next message said check stabilink ( or something similar).. it said drive with caution. I live 2 mins from my job I drove home and pulled in the driveway I then felt the car act like it wanted to shake."
"GMC Terrain with 12,564 total miles had experienced an engine failure."
Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.
Common Causes of P0016 on GMC TERRAIN
Percentages based on NHTSA complaint component analysis for this vehicle.
Complaint Trend by Year
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50-$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2-3 quotes. Dealer vs independent shop prices often differ 30-50% for the same repair.