2014 GMC Acadia
Mileage
127,763
Service Date
5/13/2021
Services Performed
- Po171 and Po174 are present in the Pcm. Fuel trim bank 1 is 22% and bank 2 is 29%. Specification is plus or minus 10%. Smoke tested the intake air system and found the pcv valve tube and the breather tube leaking. Replaced both tubes. Fuel trims are now 11% bank 1 and 17% bank 2. Tested the purge control valve with a scan tool and found it to be leaking intermittently. Monitored the mass airflow sensor with the scan tool. Idling the mass air flow sensor was reading 3 g/s. Replaced the purge valve solenoid and the mass airflow sensor. It now reads 5.5 g/s at idle. Fuel trims are now 4% bank 1 and 8% bank 2. Repair complete.
- Recovered .69 lbs. 2.5 lbs of R134A is spec. Placed system under a vacuum for 45minutes and added ac dye. Charged system to specification. No leaks detected at this time. Recheck in one week or if the ac starts blowing warm again.
Nikky H. gave our service a 5 star review on 5/13/2021
