gas cap (chec engine light) on 2004 Cadillac Escalade EXT

problem with ACDELCO PART # GT264 LOCKING GAS CAP for 2004 cadillac truck

by in Johnston, RI on March 21, 2011
1 answer
ANSWER by on March 21, 2011
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

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