Crash with oil spill at Harlem and Gunnison Heard on: Chicago Police Department Zone 01 00:12 00:00 for auto accident Harlem and Gunnison. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 for auto accident Harlem and Gunnison. 00:02 Somebody said there was oil on the ground over there. 00:09 Third party. 00:10 Called with two times, no answer. 2026-11-04 03:19 UTC Traffic W Gunnison St & Harlem Ave, Harwood Heights, IL 60706 View on map