2015 Chevrolet Sonic 1.4T: P0171 returns after a valve-cover replacement
The cover is new, but the lean code came back during the commute. How would you approach the first diagnostic visit?
The cover is new, but the lean code came back during the commute. How would you approach the first diagnostic visit?
My spreadsheet includes the first payment both upfront and in all scheduled monthly payments. What would be a sensible first step?