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NHTSA — Power Train: Automatic Transmission Problems

9.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
2,200 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 Pontiac G8 transmission problems

transmission problem

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2008 Pontiac G8 Owner Comments

problem #5

Jul 072008

G8

  • miles

A D V E R T I S E M E N T S

The automatic transmission exhibits different tendencies when trying to accelerate. This leads to unpredictable vehicle response. In one particular occasion I was attempting to merge into traffic and accelerated. The car hesitated for a good 2 seconds before accelerating leaving me to have to go off the shoulder because the cars from behind had caught up. This is an everyday problem and ruins the experience of the car.

- Mishawaka, IN, USA

problem #4

Jul 102008

G8

  • 2,500 miles
My safety issue with my 2008 Pontiac G8 GT are as follows: Laggy throttle/transmission response causes precarious positions. Hampers accident avoidance. May cause car to accelerate faster than intended resulting in a accident. For example pressing the accelerator part way results in a long delay before the car responds. When the car does respond it may accelerate at a much faster rate than intended. There is no actual acceleration feedback while pushing the gas pedal because of the delay. If I had intended to accelerate using say 1/4 throttle and because of the cars lack of response one may mistakenly press the throttle to the 1/2 position the car would eventually "engage" abruptly at the 1/2 throttle position. The result is that the car will abruptly accelerate at a much faster than intended speed potentially causing a collision. Another problem is when entering a high speed road without an entrance ramp (90 deg right turn) when the peddle is depressed to 3/4 throttle to enter, the car will slowly move into the roadway and delay before "engaging" causing other motorists to brake. If this were to happen when a non-attentive motorist were approaching it could cause an accident. I have taken my car to the dealer ant they state that is the way it is and its fine. I disagree. I have driven every kind of car one could imagine and I never had a car that had this issue. This is a safety issue and I believe GM should correct it. Car: 2008 Pontiac G8

- Lewiston, NY, USA

problem #3

Jun 012007

G8

  • 500 miles
Slow throttle response, latency when downshifting creating an unsafe condition when driving in heavy traffic situations.

- Coatesville, PA, USA

problem #2

Jul 012008

G8

  • 5,500 miles
Automatic transmission displays unacceptable latency during downshifts and unpredictable response to throttle inputs. This results in unpredictable vehicle behavior, especially during freeway merges or other situations where a moderate amount of engine power is required. This is an ongoing, constant problem that I believe is related to poor programming of the engine control module and transmission control module.

- Patchogue, NY, USA

problem #1

Jul 152008

G8

  • Automatic transmission
  • 2,500 miles
Automatic transmission displays unacceptable latency during downshifts and unpredictable transmission response to throttle inputs. This results in unpredictable vehicle behavior, especially during freeway merges or other situations where a moderate amount of engine power is required. This is an ongoing, constant problem that I believe is related to poor programming of the engine control module and transmission control module.

- Fort Worth, TX, USA

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