U0420 on GMC CANYON
What U0420 Means on Your GMC CANYON
Real GMC CANYON Owner Reports (Source: NHTSA Complaints Database)
"Would randomly experience loss of electrical power steering assist. loss of assist would happen at all times, while stationary, while driving straight, while turning, at hi low or no speeds. needed to park vehicle and turn off and restart vehicle to restore power steering assist."
"Driving down the road and power (electric) steering goes out. Power steering and traction control warnings lit up on the display. Almost impossible to steer without power steering. I am lucky that this didn't cause an accident-- very scary."
Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.
Common Causes of U0420 on GMC CANYON
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.