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2003 Tahoe fuel gauge shows almost half tank . I drive a it goes to quarter tank. And it gives me long cranks in the morning's. Could it be fuel pressure regulator . I've changed the fuel sending unit and crank position sensor. And cleaned the air intake. And I get evap code every now and then po455
How long has your 2003 Chevrolet Tahoe had this problem?
About 3 years since I changed fuel pump its getting worse now
1 Reply
Hello, no, not likely fuel pressure regulator concerns. Have you performed a fuel pressure test by using a fuel pressure gauge on the fuel rail, key on engine off? Evaporative codes don't influence this, but as a stand along concern should be addressed. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops