# Service bulletin 29030 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. - Type: Service bulletin - NHTSA id: 10137758 - Published by NHTSA: 2018\-05\-21 - Manufacturer's number: 29030 - Manufacturer's date: 2016\-04\-11 - NHTSA component: EQUIPMENT:MECHANICAL ## NHTSA's summary 29030 ? Customer Satisfaction Program. These vehicles may have been built with grease applied to the trailing arm to knuckle attachment bolts. Grease added under the shoulder of the bolts could result in the bolts slipping over time. If the bolts loosen there would be an increasing amount of noise from the rear suspension. Left unaddressed, the upper bolts could potentially back out completely. This would result in a noticeable swaying of the vehicles? rear end from road inputs while driving, and increased noise. The vehicle handling is not affected. Dealers are to replace the four rear control arm to knuckle bolts. It will also be necessary to clean any grease from the bolt mounting surfaces. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10137758-9999.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10137758-0001.pdf) The document is the manufacturer's. This site does not hold it. ## Components Equipment and accessories ## Vehicles listed - 2014 CHEVROLET SILVERADO 1500 - 2015 CHEVROLET SILVERADO 2500 - 2014 to 2015 GMC SIERRA DENALI ## Recalls for the same vehicles and component - [18V267000](/recalls/nhtsa/18V267000.md), 2018-04-26: EQUIPMENT - [13V544000](/recalls/nhtsa/13V544000.md), 2015-10-30: EQUIPMENT:OTHER:LABELS - [14V345000](/recalls/nhtsa/14V345000.md), 2014-06-18: EQUIPMENT; VEHICLE SPEED CONTROL:ACCELERATOR PEDAL - [2014216](/recalls/tc/2014216.md), 2014-06-06: Accessories ## Other bulletins for the same vehicles and component - [PI0688F](/bulletins/10253605.md), 2024-04-29, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. Poor Voice Quality During Bluetooth Call or OnStar® Personal Call. - [20\-NA\-132](/bulletins/10253527.md), 2024-04-23, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements. - [17\-NA\-052](/bulletins/10253526.md), 2024-04-23, Service bulletin: WHEELS; EQUIPMENT. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed. - [PIE0290](/bulletins/10252897.md), 2024-04-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Engineering Information. - [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements. - [PIT5401E](/bulletins/10252174.md), 2024-04-01, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Inoperative with No Communication and DTC U0184 - [PIT5387B](/bulletins/10252173.md), 2024-04-01, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. Radio HVAC IPC Blank Out When Operating A Snow Plow. - [PIT5378C](/bulletins/10252172.md), 2024-04-01, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. Radio Display May Momentarily Flicker When Vehicle Is First Started. - [PIT5362](/bulletins/10252170.md), 2024-04-01, Service bulletin: EQUIPMENT:ELECTRICAL. OnStar And XM Antenna Malfunction Setting. - [PIT5359](/bulletins/10252169.md), 2024-04-01, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Back Lighting Stays On After Key Off. JSON: [/v1/bulletins/10137758](/v1/bulletins/10137758) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2029030&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10137758&vehicle=Service%20bulletin%2029030)