Chevrolet Avalanche loss of power problems

Filed Feb 28, 2023 · Electrical, Engine · 195,000 miles · IN

The contact owns a 2007 Chevrolet Avalanche. The contact stated that while driving at various speeds, the vehicle stalled. The check engine warning light was illuminated and a message indicating that the vehicle was in Reduced Power Engine mode was displayed. The contact veered to the side of the road and turned off the vehicle. The contact stated that he disconnected and reconnected the battery and was able to continue driving. The contact stated that the failure had been reoccurring while driving. Additionally, the contact stated that the vehicle made abnormal clicking sounds. The contact stated that the check engine, traction control, ABS, stabili-trak and other unknown warning lights were illuminated. The contact stated that the transmission was slipping, and the vehicle would jerk while driving. The contact was able to continue driving. The vehicle was taken to an independent mechanic, where the spark plugs, brake light switch, and transmission oil filter were replaced; however, the failure persisted. The dealer and the manufacturer were not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 195,000.

Filed Sep 11, 2022 · Acceleration, Engine · OH

The vehicle is displaying error messages Reduced Engine Power, Service Stabilitrak, Service Traction Control. It also has the related service indicator lights for the Stabilitrak, the Traction Control, and the Check Engine Light is on. There is a service bulletin for this issue that only addresses the 2008-2011 model years, my vehicle is a 2012 and thus not included in the current bulletin and should be added to the covered vehicle list. #11-06-04-007B : Diagnosis and Repair - Malfunction Indicator Lamp (MIL) Illuminated, Reduced Power Message Displayed, DTC P2135 Set - (April 16, 2012)

Filed Sep 8, 2022 · Engine, Transmission · FL

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

Filed Jun 11, 2020 · Electrical · 107,000 miles · MT

Asking if anyone knows about the 2010 chevy avalanche and the ECM problems that alot of people are having , the check engine light came on and the display showed reduced engine power, service traction control, and service stabilitrak. It would not go in gear , nor would it start , this had happened to the truck three times now , the first time it would not go into gear and it stopped and would not start at all , so I took the negative battery cable off for 30 minute and it fixed it . The second time all the light and buzzers went off , I had lack of power and the check engine light came on and the display showed reduced engine power, service traction control, and service stabilitrak while I was driving it so I took it home , I was lucky that I didn't get in a wreck because it dropped drastically in speed all at once , again I took of the cable , and went to have the diagnostic reading done at a parts store , the next day I drove it to my mechanic and he cleared all the history on it and told me to call when it happens again , it seems that the 2010 avalanche has this problem alot , so today it happened again , for no reason ,

Filed Mar 14, 2020 · Airbags, Driver assistance · 200,000 miles · PA

While in operation at 55 MPH the engin power was reduced after three service appointments repair attempts. Reduced power mode is a condition inserted by the engine controls module as a result of the fly by wire connection. The result was a quick speed reduction to 20 MPH as max speed. Dot requires 45 MPH, unsafe!

Filed Jan 6, 2020 · Driver assistance, Engine · 85,000 miles · TX

Stabilty light came on, loss of power, check engine light, rough shifting into 2 gear. It has been down for 2 years. And not fixed yet, chevy dealership does not know what tpo do. There needs tobe a recall on the flex fuel. We were going down I-20 when all this happened. There was nearly an accident

Filed Jul 3, 2019 · Driver assistance · IL

Stabilitrak and reduced engine power comes on at rates of sometimes 3-4 times per day. No common denominator I.e. Weather, road conditions, time of year..can be driving down interstate at 70 MPH or sitting idle in park. This is very dangerous when driving loved ones around. Unfortunately I've gone as far as having a diagnostic computer hooked up at all times so I can clear the computer every time it happens in order to drive again. I've had the throttle body cleaned, changed. Computer changed and reset twice...nothing has helped. This has been happening for years someone needs to address this before someone is severely injured or worse

Filed Jan 5, 2018 · Engine, Fuel system · 71,000 miles · WI

Traveling at 65mph in -25 degrees f, our check engine light and stabilink traction control lights came on. Dash display said vehicle would lose power and our engine shut-down. We pulled over on a snowy highway and read blogs and found our throttle body sensor would crack and fail at extreme cold temp. We started vehicle and it reset, but same problem happened within 5 miles. I found a auto-zone in princeton, minnesota and bought part and replaced myself. As it was new years eve no gm assistance was available. Gm tells us there was a service bulletin but they failed to notify us. Also told us a dealer would fix the problem for free, but failed to tell us how to get to a dealer with the engine shut down. I researched and found this problem common at cold temperatures. Gm was dangerously irresponsible by not notifying us. They put us in a bad situation in extremely cold temps. I fail to see why this wasn't a recall when your vehicle basically shuts down. We could have easily been rear-ended or spun in a ditch. Thanks to blogs with no help from gm, I fixed the problem myself at extreme cold temp. Gm will not cover my $190.00 for part, not counting stress,time and labor. How can they say they verified we received no notice, but would not cover our costs. I am sure there are many more drivers put in this situation. Thanks gm.

Filed Mar 29, 2017 · Airbags, Electrical · OK

Tl* takata recall. The contact owns a 2008 chevrolet avalanche. While driving 65 MPH, the vehicle lost all power without warning. The contact was able to pull the vehicle over to the side of the road and restarted the vehicle. The vehicle was taken to an independent mechanic for diagnostic testing, but there was no failure code. The contact was notified that a possible issue could be the amount of keys on the keychain. The contact received notification of the federal safety agency campaign number: 16v381000 (air bags); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issues. The failure mileage was unknown. Vin tool confirms parts not available.

Filed Nov 10, 2015 · Engine · 143,000 miles · TX

Tl* the contact owns a 2008 chevrolet avalanche. While driving approximately 55 MPH, the vehicle lost power without warning. The vehicle was pulled to the side of the road, turned off, and was restarted after a few minutes. The vehicle was taken to an independent mechanic who diagnosed and replaced the oil pressure sensor and the oil screen. The failure recurred and the vehicle was taken back to the mechanic who replaced the oil pump and advised the contact not to waste any more money on the vehicle. The manufacturer was notified of the failure and recommended a diagnostic evaluation of the vehicle and also stated that the vehicle was out of warranty. The vehicle was not repaired. The failure mileage was 143,000. The VIN was not provided. The consumer stated the issue was the malfunction of the active fuel management system and/or the valve lifter oil manifold assembly on the general motor's 5.3 litre engine from 2007-2010. The vlom was bolted to the top of the engine valley, below the intake manifold assembly. The vlom consisted of four electrically operated normally closed solenoids. Each solenoid controlled the application of engine oil pressure on the intake and exhaust valve filters on the cylinders selected to deactivate. When the assembly fails, oil is not distributed properly through chambers. The consumer experienced reduced power in the middle of the freeway after receiving a no oil pressure alert on the dashboard. The vehicle was towed to a repair shop, where it was recommended the engine be replaced. Updated 12/07/15.