{"nhtsa_id":10115089,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2015-11-03","document_id":"PIT5476","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician about vehicles that may have rough harsh ride. Technician will need to use the Pico Oscilloscope to evaluate the vehicle. If a rough/harsh/stiff ride has been determined to be the customer?s concern, following evaluation using the Pico Oscilloscope, then replace the complete front suspension shock with coil spring assemblies, and rear shocks with updated parts and reprogram the Suspension Control Module with updated calibrations available in TIS2WEB.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10115089-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10115089-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10115089","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"SIERRA 2500","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_gmc_sierra"]}],"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":[]}