P0300 on GMC CANYON — Random/Multiple Cylinder Misfire Detected

Q: "What does P0300 mean on a GMC CANYON?"

"P0300 indicates: Random/Multiple Cylinder Misfire Detected. This is a ignition system code. 2 GMC CANYON owners have reported this to NHTSA."

Q: "What are the most common causes of P0300 on GMC CANYON?"

"Based on 2 NHTSA reports, the most commonly cited components are: Engine And Engine Cooling, Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0300 serious on my GMC CANYON?"

"Of 2 NHTSA reports for this code on GMC CANYON, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my GMC CANYON shows P0300?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P0300 Means on Your GMC CANYON

P0300 is a diagnostic trouble code indicating: Random/Multiple Cylinder Misfire Detected. This code relates to the ignition system system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 GMC CANYON owners have reported this issue to NHTSA across model years 2005-2006. Most reports come from the 2005, 2006 model years. The most commonly reported component is Engine And Engine Cooling (50.0% of reports).

Real GMC CANYON Owner Reports

Source: NHTSA Complaints Database

"I was driving at the time of failure. engine light comes on and i took it to the shop to run a diagnostics. these are the codes p0106, p0300 and p0506 that are causing the engine light to keep coming on. this is the second time this has happen."

— 2005 GMC CANYON owner · ENGINE AND ENGINE COOLING · Filed 12/07/2005

"Check engine light came on, i used a code reader and p0300 came up. i replaced the appropriate sensors and reset it. truck ran fine. one week later the check engine light comes on again and this time i get a p0017 code. i replaced two of the sensors and replaced oil filter with a oil change."

— 2006 GMC CANYON owner · ENGINE · Filed 03/01/2011

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'05

1

'06

Common Causes on GMC CANYON

Based on NHTSA complaint component analysis for this vehicle.

ENGINE and ENGINE COOLING 50%

ENGINE 50%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0300 mean on a GMC CANYON? ▾

P0300 indicates: Random/Multiple Cylinder Misfire Detected. This is a ignition system code. 2 GMC CANYON owners have reported this to NHTSA.

What are the most common causes of P0300 on GMC CANYON? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Engine And Engine Cooling, Engine. These percentages are based on the component field in owner complaints.

Is P0300 serious on my GMC CANYON? ▾

Of 2 NHTSA reports for this code on GMC CANYON, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my GMC CANYON shows P0300? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.