I am an owner of a 2013 Chevy Avalanche and must say that i enjoy driving this vehicle. The problem that i have is the vehicle has been going into Engine Power Reduced Mode. This mode makes the vehicle hard to accelerate to highway speeds. The vehicle will have a code of P2128 or P2138 which is an accelator pedel ciruit problem. I changed the acceleator pedal and did not solve the problem. I changed out the Throttle Body Sensor and still the problem remains. On the dashboard it will show Check Engine Light on, Service Stablinktrac light on, and Service Traction Control Light on. I have seen other vehicle owners experience the same problems with their vehicles and told that there was no recall and have to pay for the repairs out of pocket. These are very well made vehicles but when they going into Engine Power Reduced Mode, drive ability is diminished.

- Kissimmee, FL, USA

Repeated instances of engine misfire/loss of power due to known issue with 5.3L Engines. Chevy/GM have repeatedly not fixed root cause/issues leading to "Stabilitrac/Traction control" error messages during engine misfire while driving in traffic. On 3 of these occasions loss power in roads/intersections with oncoming traffic. Two of these occasions, almost caused collisions. Currently truck at dealership since 4/11/22, with Warranty company (extended warranty) and Chevy dealership discussing mechanical issues with Rings, Pistons, Lifters versus "Carbon build up". Engine very low mileage per year. Total milage under 72k. Carbon is in all engines, failure root cause according to research and service department not related to carbon. In conversation with Service Manager, in past Chevy service departments followed guidelines of "Stick a plug and wire on it, and send it out". 3/19/16- 4/2/16: Issues started. Reported to Chevy performance issues. Did this on 2-3 occasions, air filter replaced one visit, told "without error messages, can not diagnose problem." 31k mile 6/18/16: "Stabilitrac/Traction control" error messages. Engine misfires start. Diagnosis fouled #7 spark plug. Spark plug replaced. Service department verbal comment, "Don't know cause, platinum plugs good to 100K, never seen this before"34k mile 2/21/18: "Stabilitrac/Traction control" error messages. Engine misfire in traffic. Diagnosis misfires with #7 spark plug. Service replaced valve cover with updated metal flap to stop oil from spraying on plug. Removed intake manifold/clean intake runners of oil deposits 7/31/21: #7 checked.No issues 53K 11/11/21: "Stabilitrac/Traction control" error messages. Engine misfire/ stall badly in traffic. Multiple misfires with #7 cylinder. Diagnosis:No issues found after error message reset.Truck perfect, passed inspection to purchase Extended warranty from dealership 4/11/22: "Stabilitrac/Traction control"error messages. Engine misfire/stall in traffic. Engine failure

- Odessa, FL, USA

My Chevy Avalanche has a generation for vortex 5300 engine we are using at least a quarter volt in between oil changes also the oil monitoring system is allowing me to drive and to operate the vehicle without adequate oil because the oil gauge is not reading when the oil is ready to be changed. This has been happening since the day we purchased it new in 2013 we were told by the dealership that this is typical of this engine I'm now finding out that it is not and that it is involved in a class action lawsuit and I need to be documented in that lawsuit.

- Rotonda West, FL, USA

Stabilitrak and traction control lights keep coming on and check engine light. Loses power and stability while going uphill or accelerating. GM service out of warranty. Looked at possible recalls none available. Noticed alot of issues regarding 5.3 V8 from 2010 to 2013 GM models. Excessive oil consumption also. Do I just pay for a new engine or is anyone doing anything about this oversight by GM? thousands of complaints but no accountability.

- Orange, MA, USA

. want my airbags to work if I need them. Recovered a letter in mail today 10/31/2017

- Fowlerville, Michigan, MI, USA