EXHIBIT 23.3 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement No. 333-114496, 333-121039, and 333-128547 on Form S-3 and No. 333-116014 and 333-122716 on Form S-8 of Gasco Energy, Inc. ("Gasco") of our reports dated March 1, 2006 relating to our audits of the consolidated financial statements and internal control over financial reporting, included in and incorporated by reference in the Annual Report on Form 10-K of Gasco for the year ended December 31, 2005. HEIN & ASSOCIATES LLP Denver, Colorado March 1, 2006