The 2004 Pontiac GTO offered two transmission options: a standard six-speed manual Tremec T56 and an optional four-speed automatic (GM 4L60-E).
Overview of the transmission options
For the model year 2004, buyers could choose between a enthusiast-friendly manual gearbox and a more convenient automatic. The two options were designed to pair with the car’s 5.7-liter V8 for different driving preferences.
- Six-speed manual Tremec T56 (standard on most 2004 GTOs)
- Four-speed automatic GM 4L60-E (optional)
These were the core transmission configurations offered for the 2004 GTO in the United States, giving drivers either a hands-on shifting experience or a smoother, auto-equipped ride for daily driving.
Technical notes
The Tremec T56 manual is a robust six-speed gearbox paired with the LS1-based V8, delivering quick shifts and a sportier feel. The 4L60-E automatic is a four-speed automatic with electronic controls and overdrive, designed to complement the same engine setup for a comfortable cruising experience. While some later models saw updates, the 2004 GTO’s primary options remained the T56 manual and the 4L60-E automatic.
Bottom line for buyers
In practice, the choice came down to preference: engage with a manual six-speed for a more involved drive or opt for the automatic for easier daily commuting while retaining strong performance.
Summary
For the 2004 Pontiac GTO, two transmissions were available: a standard six-speed manual Tremec T56 and an optional four-speed automatic GM 4L60-E. This pairing gave buyers flexibility between an engaging driving experience and everyday practicality.
Is a 2004 GTO a good car?
As a whole, consumers found the vehicle's comfort and performance to be its strongest features and styling to be its weakest. 498 out of 571 of owners (87% of them) rank the 2004 GTO five out of five stars. Overall, consumers seem aligned in their opinions of the 2004 Pontiac GTO.
How fast is the 2004 GTO 0 to 60?
5.3 seconds
The GTO charges headlights ablaze out of a toxic cloud of tire smoke to turn 5.3 seconds at 60 mph and 14 seconds flat in the quarter-mile at 102 mph, clobbering with big-bore snort new import coupes such as the Infiniti G35 and Mazda RX-8.
Did GTO have LS1?
2004 Pontiac GTO LS1 5.7L V8 Engine with 6 speed manual transmission.
What was special about the 2004 GTO?
The 2004 model came equipped with a 5.7L LS1 V8 engine producing 350 horsepower, offering impressive acceleration and a refined driving experience. In 2005, Pontiac upgraded the GTO with the LS2 6.0L V8, boosting output to 400 horsepower and 400 lb-ft of torque, making it one of the most powerful production GTOs ever.