2004 Cadillac Escalade EXT Q&A

2004 Cadillac Escalade EXT Question: gas cap (chec engine light)

problem with ACDELCO PART # GT264 LOCKING GAS CAP for 2004 cadillac truck -
Answer 1
I'd get a computer diagnostic. A failed EVAP solenoid is a common thing on these and will turn the "check gas cap" message on. If the gas cap's seal ring is good and the cap is tight there is a possible EVAP solenoid failure or a leak somewhere else on the EVAP system. Zee -