2021 Cadillac XT4 in for Pre-purchase Inspection
June 9, 2026
What We Found:
No dash lights on. At 51k miles we found a check engine on for P0137 H02S sensor voltage, history fault, failed since DTC cleared. Key fob battery failed history.
Under the hood inspection:
AC Delco spark plugs due for service. An oil leak from the turbo oil feed line gaskets
What We Found:
No dash lights on. At 51k miles we found a check engine on for P0137 H02S sensor voltage, history fault, failed since DTC cleared. Key fob battery failed history.
Under the hood inspection:
AC Delco spark plugs due for service. An oil leak from the turbo oil feed line gaskets