*Check engine light on, Reduced Power Light is on, and Vehicle is surging up and down. *Driving on highway and Engine power is reduced, cars behind me honked until I could get over into the right lane because I was losing power., confirmed by LaFontaine of Ann Arbor, MI, inspected by LaFontaine of Ann Arbor MI Customer states check engine light on, reduced power light and the vehicle did have reduced power. Vehicle is surging up and down at an idel. GM assistance, submit for DMA approval to deviate on PET per Scott S DMA. N/C to customer per DMA, If an FSE is needed please submit request. Found air duct not connected to throttle body and throttle body is cause. Inspected and found air duct loose on throttle body. inspected to find throttle body edge is wore and is cause. removed and replaced throttle body to address fail code P0101. 4021510 0.8 and add 1.0 diag, Engine Power is Reduced light and Engine light was

- Ottawa Lake, MI, USA

*Service trans, check engine, stabilitrak, gas light, would not come out of 1st gear, stalled, started back up and jerked on the way to dealership, locks were flickering, lights would not light up for the PRNDL, shift to park message on, and vehicle would not start back up when pulled into service drive. *would not shift out of 1st gear while in traffic, vehicle stalled in traffic, vehicle jerked whi9le driving. *Confirmed by LaFontaine of Ann Arbor, MI *Vehicle inspected by LaFontaine of Ann Arbor, MI Service trans, check engine, stabilitrak, gas light, would not come out of 1st gear, stalled, started back up and jerked on the way to dealership, locks were flickering, lights would not light up for the PRNDL, shift to park message on, and vehicle would not start back up when pulled into service drive. TAC Case # 9-6556499036. Tech 24694 worked with Field Engineer and checked wiring, terminals, and connectors at high speed comm modules and found all passed, replaced BCM and still had concern. Tech 1235 bypassed modules and test drover to eliminate diff control module, EBCM and when EBCM was bypassed concern never returned OSYN9761769 Tech 56653 completed BCM replacement and programming, wire, terminals and connector checks with engineer. Tech 1235 replaced EBCM assembly, OP code 2410330 completed diag by bypassing modules and completed bleeding brakes.Tech 1235 total repair 3.9. Tech 56553 performed BCM replacement. 2.9 base time, 4.8 OLH. Repairs approved per DMA approval / PET Sheet. Test drove vehicle 139 miles without a concern.

- Ottawa Lake, MI, USA

*Service Transmission message and vehicle goes into neutral. *Vehicle loses power, almost got rear ended by an 18 wheeler when trying to pull over to the shoulder of the highway., LaFontaine of Ann Arbor, MI confirmed *Inspected by LaFontaine of Ann Arbor, MI - Cust states the service transmission message light is coming on and the vehicle goes into neutral and stalls, service ll wheel drive message coming on, traction light coming on, customer going about 74 mph and the speedo gauge dropping out, low fuel light coming on even though it has fuel. Per DMA and GM Executive the repairs will be covered 100 %, send DMA pre approval and PET. There is a broken or loose communication wire intermittently disconnecting and causing multiple modules to fault. Could not find broken wire. Request # 9-6483892482 replaced engine harness OP 4069760 ST Time. 8.3 hours Per PET, DMA Pre Auth., warning lamps, messages were on the dash

- Ottawa Lake, MI, USA

service transmission message coming on and the vehicle goes into neutral and stalls, service transmission light comes on while on highway and the vehicle goes into park and loses power and stalls, All wheel drive message coming on, traction light coming on, going about 74 mph on highway and speed gauge dropping, low fuel light coming on even thought it has 3/4 tank of gas. almost got ran into from behind twice when the vehicle went into neutral and into park by an 18 wheeler truck as I was trying to pull over onto the shoulder of the highway. *Confirmed by LaFontaine in Ann Arbor, MI *Vehicle has been inspected by LaFontaine in Ann Arbor, MI. Found bulletin 19-NA-181 which was very close to all symptoms and stated to check for chaffed wires near the ECM. Found no spots in the tape where it was rubbed through but lost comms when wires were shook. Unwrapped main engine harness loom and inspected wires, found nothing. Started TAC Case # 9-6385087421 and was told it probably is a chaffed comms wire somewhere and gave me multiple locations to check. Found no damaged wires in those locations and shaking main harness no longer would make it fault. Put it all together and drove it down the road and faulted immediately. Unwrapped main harness again snd sprayed with saltwater to help conductivity but still couldn't get it to fault while shaking the harness. Only way it will fault is when shifting into drive the drive train bumps just right to bend the right wire. Checked every wire I could find and can't find the problem wire. Not drivable. When this vehicle faults it will not shift past 1st gear and sometimes locks out reverse. Must be towed. Needs the main wiring harness to start, recommend customer to authorize FSE to dealership CUST declined., all the lights and messages were coming on over the dash.

- Ottawa Lake, MI, USA

*Check Engine Light on, Short to Voltage inside Hood Switch Setting P257F. Switch Must Be Replaced, Recall N192216311 Cust May be Able to Shift Out of Park OP 9104813 Reprogram ECM.3 WCC 11YN37748687 *Scared to drive vehicle when the hood switch was the problem. Did not want to driveon the road and the hood fly up and I would be unable to see out of the front windshield., vehicle inspected by LaFontaine in Ann Arbor, MI. *Vehicle was inspected by LaFontaine in Ann Arbor, MI. *Engine Light was on.

- Ottawa Lake, MI, USA

*Trans clutch drag recall *While driving, it would take a minute to shift gears and the vehicles behind me would ride up on the back of my car until it would shift into the next gear and pick up speed to do the speed limit. *Took the Terrain to aFontaine in Ann Arbor, MI and the service center reprogramed the Transmission Control Module and setup with SPS 0.7, the vehicle was inspected by LaFontaine dealership in Ann Arbor, MI warning messages, I could hear the transmission not shifting when it should be. The transmission problem starting happening in Sept 2019 and brought it into the dealership in Oct 2019.

- Ottawa Lake, MI, USA

The contact owns a 2019 GMC Terrain. The contact stated while reversing the vehicle shuddered with the check engine warning light illuminated. The transmission also shifted into park and the service engine light illuminated. The vehicle was taken to capital Buick GMC located at 2150 cobb pkwy SE, smyrna, ga 30080 where the contact was informed that an engineer would be sent out to diagnose the vehicle, which was still pending. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 551,001.

- Atlanta, GA, USA

When aggressively accelerating to merge or pass another driver, the 2.0T engine paired with an AWD platform will loose power and 3 sensor lights will flash and illuminate traction control, AWD and check engine indicating a cylinder misfire. Event occurred first at 2000 miles and vehicles serviced at dealership and second event occurred at 4500 miles and returned to original dealership where purchased.

- Jacksonville, FL, USA

On August 23, 2019, my vehicle incurred an engine and transmission failure reported by GMC onstar application. The symptoms of failure are repeated acceleration speed control causing speed limit violations, interference with other moving traffic, spousal trauma, and illumination of multiple display window lights in the dashboard behind steering wheel. On October 14, 2019, there was a reoccurrence of the same issue. In fact, this report is to get ahead of the problem before taking vehicle for service this morning, October 15, 2019, at sewell Buick GMC. I have service documentation and onstar email messages of failure for evidence of this report.

- Cedar Hill, TX, USA

July 10, 2019 at highway speed upon acceleration turbo body tube blew off suddenly and engine reduced to half power / check engine light comes on. This happened after only 1000 miles on new car. After a repair by dealership July 11,2019 same problem occurred July 12, 2019 while on highway.

- Shirley, NY, USA

I purchased a 2019 GMC Terrain VIN: [xxx] on Jan 17, 2019 at rizza Buick GMC 8415 w. 159th street, tinley park il, 60487, on January 17, 2019. This was my first brand new car and I was excited. I traded in a 2014 GMC Terrain in the process, knowing I would be upside down on the loan. I had the first service done on April 23, 2019 at said dealership. At that visit I explained that I was hearing a noise on the passenger side vent even when the HVAC was not running. I was told nothing was detected and my vehicle was fine on May 24, 2019, I drove my vehicle to memphis Tennessee with my family for memorial day. On May 25, 2019 the check engine light came on, I was losing power to the engine. That same night customer service towed my vehicle to sunrise Chevrolet Buick GMC, 1800 covington pike memphis, Tennessee 38128, a nearby GMC dealership and set up a rental car in the area for me to drive. Because it was the holiday, enterprise was closed, and I had no vehicle to drive for two days. This was an inconvenience to me and my family, I had to alter my trip plans that were made back in February 2019. On May 27, 2019 I was told by [xxx] the technician at sunrise Chevrolet that air box tube was loose and not properly installed and could have been done during my service I had done April 23rd. I was assured everything was okay and I was good to go. On May 31, while traveling back home the check engine light came on again. Same message on the dash and it was raining at 3am. I was close to home and was able to make it to the dealership that I purchased it from. My vehicle has been in service since May 31, 2019 and I am just finding out that I have a part that is on national back order. I am not satisfied with my experience an I am reaching out to you to resolve this matter. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- University Park, IL, USA

I have a 2019 GMC terrian with 2500 miles. I was driving it and the car flashed low fuel, check transmission and check engine warning and shut down while I was as a highway speed. I was fortunately ok, however it stranded me at a spot with merging traffic, no shoulder and no power to get the vehicle out of there. The vehicle was able to start up shortly, then I had to deal with getting going again in this precarious spot.

- Victoria, MN, USA

Need the option to disable the auto start feature.

- Riverview, FL, USA