{"nhtsa_id":10005559,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-03-03","date":"2003-11-01","document_id":"030604062","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"THIS BULLETIN IS BEING ISSUED TO REVISE STEP 4 OF DIAGNOSTIC TROUBLE CODE (DTC) P2135. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10005559","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P2135"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_cadillac_escalade"]},{"make":"CHEVROLET","model":"AVALANCHE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_avalanche"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_tahoe"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_trailblazer"]},{"make":"CHEVROLET","model":"W-SERIES","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"ENVOY","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_gmc_envoy"]},{"make":"GMC","model":"SIERRA","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_gmc_sierra"]},{"make":"GMC","model":"W-SERIES","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"YUKON","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_gmc_yukon"]},{"make":"HUMMER","model":"H2","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_hummer_h2"]}],"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":[]}