P0300 on GMC TERRAIN
What P0300 Means on Your GMC TERRAIN
Real GMC TERRAIN Owner Reports (Source: NHTSA Complaints Database)
"Code-p0014-camshaft positionb timing over-advanced or system.code-p0300 random/muitiple cylinder misfire.computerized engine analysis."
"My car oil consumption is excessive. i have repetitive codes: p0089, p0300, p0366, p228d, p0014 and the check engine light being on. car is jerking back and forth when at a stop light. tapping noise made also."
"On february 9th, driving home on a rough highway, my service esc, abs, traction control and check engine light (flashing) came on. i immediately pulled over, freaking out. shut my car off cause i had no clue what to do. sat for a few minutes, collecting myself and turned it back on."
Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.
Common Causes of P0300 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.