{"nhtsa_id":10017826,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-12-02","date":"2005-09-01","document_id":"050604060","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"POWERTRAIN CONTROL MODULE (PCM), ENGINE CONTROL MODULE (ECM), TRANSMISSION CONTROL MODULE (TCM) DIAGNOSTIC TROUBLE CODE(S) (DTC)(S) P0601, P0602, P0603, P0604, P1621 SHARED IN MULTIPLE MODULES. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10017826","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0601","P0602","P0603","P0604","P1621"],"topics":[],"vehicles":[{"make":"HUMMER","model":"H2","year_from":2005,"year_to":2006,"match":"exact","vehicle_ids":["2005_hummer_h2","2006_hummer_h2"]},{"make":"HUMMER","model":"H3","year_from":2006,"year_to":2006,"match":"exact","vehicle_ids":["2006_hummer_h3"]},{"make":"SAAB","model":"9-7X","year_from":2005,"year_to":2006,"match":"exact","vehicle_ids":["2005_saab_9-7x","2006_saab_9-7x"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}