Gmc Denali 2014

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Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

• Brake vacuum pump failure investigation # PE18012

  The office of defects investigation (odi) has received 111 reports of hard brake pedal effort accompanied by extended stopping distance in model years (my) 2014 to 2016 general motors (gm) light trucks based on the k2xx platform, 1500 series pickup trucks and sport utility vehicles (silverado, sierra, suburban, yukon, tahoe, escalade). These conditions are attributed to deterioration of the engine-driven brake assist vacuum pump. Nine of these incidents included vehicles incurring damage as a result colliding with another vehicle or fixed object at low speeds.The brake assist vacuum pump is driven by an accessory belt on the engine and serves as the source of power brake vacuum in the subject vehicles. Over time, the pumps capacity to generate vacuum may deteriorate. The subject vehicles receive supplemental hydraulic brake assist from the abs system, albeit at lower levels than the vacuum-powered primary system.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance.A preliminary evaluation has been opened to assess the scope, frequency, circumstances, and safety consequences of the alleged defect.The odi complaints cited above can be viewed at www.Nhtsa.Gov under the following odi identification numbers: 11143759, 11143710, 11143349, 11142826, 11142685, 11142544, 11142374, 11140624, 11140321, 11139980, 11139614, 11139210, 11132847, 11132455, 11131903, 11131066, 11128191, 11124506, 11124227, 11123463, 11121979, 11121611, 11102448, 11101165, 11099906, 11121172, 11119847, 11118984, 11118870, 11111834, 11115151, 11114340, 11113548, 11112722, 11110640, 11110393, 11110264, 11105051, 11104203, 11103906, 11104097, 11101822, 11102108, 11100297, 11099907, 11098785, 11097335, 11094026, 11011875, 11090358, 11089691, 11089278, 11089173, 11088926, 11084934, 11084610, 11082247, 11078820, 11072654, 11065323, 11056319, 11081406, 11072905, 11075730, 11067395, 11056635, 11055292, 11021419, 11065274, 11064605, 11064080, 11063087, 11056908, 11054734, 11054123, 11053444, 11067234, 11048544, 11048333, 11046974, 11045731, 11044677, 11031984, 11030722, 11030016, 11025403, 11022709, 11020372, 11003691, 10995134, 11047239, 11043192, 11034792, 11034518, 11033883, 11032103, 11030685, 11021601, 11006271, 11002554, 11001423, 10991595, 11013706, 10984684, 10967071, 11119907, 11083289, 11062858, 11047981, 11041607, 11021253
  

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The stability control light came on and it would not let me drive it just stop in the road

The stability control light came on and it would not let me drive it just stop in the road

While driving on a city street the 2014 gmc sierra 6.2 l v8 lost power and started running rough as approaching an intersection. I was able to stop, and reverse the vehicle away from the intersection, to get out of traffic. The engine light was flashing and the truck shut down, it was unable to restart. The truck had under 60,000 miles on it at the time of the first incident. It was towed to a gm dealer shop for repair. This first incident took place in august of 2019. The rocker arm and exhaust spring had to be replaced in the #2 cylinder, the cylinder head had to be rebuilt with a new head. In addition they replaced 4 fuel injectors. In december of 2019, a second incident happen while driving on a city street, the engine started running rough, i was close enough to my house to get it home, park it and it was towed to a a certified gm dealer shop for repair. This time it had 61,752 miles on the vehicle, the number 5 spring broke. It is at the shop waiting on spring replacement, they are in backorder, there is not projected time the repair will be complete.

Brake failure. The brake vacuum pump failed. I marked the failure as today as the dealership confirmed the failure. The failure occurred a month or so ago. It does not happen all of time.

Blind spot sensors in the morrors are always lighting up with nothing to set them off.Gm says there is no fix and they know of this problem with the acadia

Check engine light code for def heater failure. Possible limp mode effect in traffic.

Common OBD-II Error Codes

• P0442 [1] Evaporative Emission Control System Leak Detected (small leak)
• P0455 [1] Evaporative Emission Control System Leak Detected (gross leak)