P0300 on GMC YUKON
What P0300 Means on Your GMC YUKON
Real GMC YUKON Owner Reports (Source: NHTSA Complaints Database)
"I purchased a new 2020 GMC Yukon in May of 2020. Between May 2020 and November 2025 the vehicle was routinely serviced on or before the due date recommend by the manufacturer."
"I got 3 messages on the dash going off simultaneously 1. Service Traction Control System 2. Forward Collision System unavailable 3."
"While driving on a highway, the vehicle intermittently suffers a sudden loss of engine power during acceleration, accompanied by a flashing check engine light."
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 YUKON
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.