{"nhtsa_id":10022722,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2007-09-25","date":"2008-09-01","document_id":"07123","mfr_campaign":null,"replaces":"07123A","component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"CHEVROLET GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SPECIAL COVERAGE ADJUSTMENT - ENGINE INTAKE VALVE SEAT MAY WEAR, SUCH THAT COMBUSTION LEAKAGE OCCURS. EQUIPPED WITH EITHER A 2.8L (RPO LK5) 4 CYLINDER OR 3.5L (RPO L52) 5 CYLINDER ENGINE. *NJ CSC LETTER WAS RECEIVED. UPDATED 3/9/09. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10022722","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"COLORADO","year_from":2004,"year_to":2006,"match":"exact","vehicle_ids":["2004_chevrolet_colorado","2005_chevrolet_colorado","2006_chevrolet_colorado"]},{"make":"GMC","model":"CANYON","year_from":2004,"year_to":2006,"match":"exact","vehicle_ids":["2004_gmc_canyon","2005_gmc_canyon","2006_gmc_canyon"]}],"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":[]}