2011 Chevrolet Tahoe: sudden loss of power

Filed May 12, 2024 · Electrical · CA

Stability trac, ABS, traction control, passenger air bag, locks are locking and unlocking, voltage to high, car will lose power while driving then shut off after alternator replaced, truck is worse also back trailer brake sensor appears to, no engine lights on went to two mechanics and unable to find the problem, very dangerous my car will randomly turn off while driving and cars in back slamming on their brakes to avoid hitting me

Filed Jan 23, 2019 · Fuel system · 74,000 miles · MA

My 2011 chevy tahoe was in motion on a town road when several alerts came up on the dashboard including service traction control, service stabilink and reduced engine power. The local dealer used a scan tool and found dtc # p2135 - throttle position sensor. Gm has a service bulletin #11273a that authorizes full replacement of the sensor at no cost to the customer for affected vehicles. Affected vehicles include 2008 - 2011 chevy tahoe's. But gm says my VIN on 2011 tahoe is not covered. This is clearly a major part defect for that spans multiple decades and multiple gm vehicles that can result in the very unsafe and unexpected loss or reduction in engine power. Clearly this part defect is affecting more vehicles than just those selectively covered under the service bulletin. A call to gm service resulted as expected and they were unwilling to acknowledge the issue with the tps is more pervasive than they have claimed. They refused to cover the cost of my repair despite the fact this is clearly a defective part.

Filed Dec 23, 2013 · Driver assistance · 46,585 miles · NY

I was driving on the highway at approx 60 MPH. The truck dropped speed rapidly and without warning. Lights starting flashing and stating reduced engine power - service stabilitrak. When attempting to pull over I applied the brakes and the truck lunged forward. This happened three times before the engine sputtered and shut off - on the highway. Gm/chevrolet states this is not under warranty. The truck is less than 3 years old.

Filed Mar 28, 2013 · Brakes, Driver assistance · 41,000 miles · VA

I was driving on the highway at approx 65 MPH. The truck dropped speed rapidly and without warning. Lights starting flashing and stating reduced engine power - service stabilitrak. When attempting to pull over I applied the brakes and the truck lunged forward. This happened three times before the engine sputtered and shut off - on the highway.diagnostic tests show it was error p2135 - the throttle body component. Gm/chevrolet states this is not under warranty. The truck is less than 2 years old. Clearly there is a recall needed as this mimics toyota's issue with not stopping when the brake is applied and the rapid deceleration without warning is a clear safety issue.

Filed May 24, 2012 · Acceleration, Electrical · 4,000 miles · MD

Tl* the contact owns a 2011 chevrolet tahoe. The contact stated that while driving 45 MPH, the vehicle independently decelerated. The contact mentioned that the ABS, loss of power, check engine and the traction control warning lamps were illuminated immediately after the failure. In addition, the contact mentioned that the failure recurred several times. The vehicle was taken to the dealer who diagnosed that the throttle sensor and cables were defective and needed to be replaced. The vehicle was repaired but the remedy failed to correct the problem. The manufacturer was not made aware of the failure. The vehicle was not further repaired. The VIN was not available. The failure mileage was 4,000 and the current mileage was 17,000. Updated 07/02/12 *bf the consumer stated the vehicle loss all power and the vehicle decelerated quickly. Updated 07/12/12