{"nhtsa_id":600270,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-05-01","date":"1998-02-01","document_id":"98831110","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"VEHICLES WITH 6.0L AND 7.0L ENGINES (VINS P, M - RPOS LS0, LR0) MAY EXHIBIT ENGINE EXHAUST NOISE WHICH IS LOUDEST DURING COLD ENGINE OPERATION. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/600270","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"B7","year_from":1991,"year_to":1995,"match":"exact","vehicle_ids":["1991_chevrolet_b7","1992_chevrolet_b7","1993_chevrolet_b7","1994_chevrolet_b7","1995_chevrolet_b7"]},{"make":"CHEVROLET","model":"C6","year_from":1991,"year_to":1995,"match":"exact","vehicle_ids":["1991_chevrolet_c6","1992_chevrolet_c6","1993_chevrolet_c6","1994_chevrolet_c6","1995_chevrolet_c6"]},{"make":"CHEVROLET","model":"C7","year_from":1991,"year_to":1995,"match":"exact","vehicle_ids":["1991_chevrolet_c7","1992_chevrolet_c7","1993_chevrolet_c7","1994_chevrolet_c7","1995_chevrolet_c7"]},{"make":"CHEVROLET","model":"P","year_from":1995,"year_to":1995,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"P SERIES","year_from":1991,"year_to":1994,"match":"exact","vehicle_ids":["1991_chevrolet_p-series","1992_chevrolet_p-series","1993_chevrolet_p-series","1994_chevrolet_p-series"]},{"make":"CHEVROLET","model":"P SERIES","year_from":1995,"year_to":1995,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"B7","year_from":1991,"year_to":1995,"match":"exact","vehicle_ids":["1991_gmc_b7","1992_gmc_b7","1993_gmc_b7","1994_gmc_b7","1995_gmc_b7"]},{"make":"GMC","model":"C6","year_from":1991,"year_to":1995,"match":"exact","vehicle_ids":["1991_gmc_c6","1992_gmc_c6","1993_gmc_c6","1994_gmc_c6","1995_gmc_c6"]},{"make":"GMC","model":"C7","year_from":1991,"year_to":1995,"match":"exact","vehicle_ids":["1991_gmc_c7","1992_gmc_c7","1993_gmc_c7","1994_gmc_c7","1995_gmc_c7"]},{"make":"GMC","model":"P SERIES","year_from":1991,"year_to":1995,"match":null,"vehicle_ids":[]}],"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":[]}