P0171 on Chevrolet vehicles
41 owner complaints filed with NHTSA about Chevrolet vehicles mention P0171 (System Too Lean Bank 1) - across 14 models. Below is where it shows up, by model and year.
Can you drive with it? Driveable short-term, but a lean engine runs hot - prolonged driving risks misfires and converter damage. Diagnose within a couple of weeks.
Symptoms, likely causes in order and realistic repair costs are on the main P0171 page - they do not differ much by brand. This page shows what is specific to Chevrolet: which models and years actually report it.
Chevrolet models reporting P0171
The number next to each year is how many NHTSA complaints for that car mention P0171. Owners rarely quote trouble codes when complaining, so real occurrence is many times higher - use these numbers to compare years, not as totals.
What Chevrolet owners report
“Exhaust bracket broke, created a hole in pipe, which then resulted in cracked catalytic converter. Dealership and GM denied repairs due to the hole being on the "wrong pipe" but the same bracket that is covered broke resulting in the consequential damage. Check engine light came on, loud exhaust noise. Threw codes P219A, P2097, P0171. Bulletin even outlines that broken bracket/hole can cause cracks in converter, still denied. This is a known issue with the welding on this pipe/bracket, why they didn't extend the coverage to BOTH pipes is beyond me.”2019 Chevrolet Traverse · Apr 2026
“While driving 60 MPH on the highway my car started stuttering then lost all power. It threw 3 codes P0131, P2097 and P0171. I have spent over $1,000.00 and a month later they tell me it was my intake bolts that were loose. They replaced every part PCV valve, MAF sensor, O2 sensor and car still wouldn't run right. PLEASE address this issue as that is UNSAFE for a car to just stop on the highway.”2014 Chevrolet Malibu · Mar 2024 · 167,611 mi
P0171 on other makes
Makes with enough NHTSA reports of P0171 for their own page.
Counts are NHTSA owner complaints whose text mentions P0171 - owner-reported and unverified. Always confirm with a diagnosis of your specific vehicle.