What cars had the 2004r transmission

## The 2004R Transmission: A History and Review

The 2004R transmission is a four-speed automatic transmission that was introduced by General Motors in 1982. It was designed to replace the aging THM350 transmission, and it was used in a variety of GM vehicles, including the Chevrolet Camaro, Pontiac Firebird, and Buick Regal. The 2004R transmission is known for its durability and performance, and it is still used in some vehicles today.

### Design and Features

The 2004R transmission is a four-speed automatic transmission with a lock-up torque converter. It is designed to handle up to 350 horsepower and 400 lb-ft of torque. The transmission features a planetary gearset with a compound low gear ratio of 2.74:1. This low gear ratio provides excellent acceleration, and it is also useful for towing or hauling heavy loads.

The 2004R transmission also features a lock-up torque converter. This lock-up torque converter helps to improve fuel economy by reducing slippage between the engine and transmission. The torque converter is locked up in all gears except first gear, and it can help to improve fuel economy by up to 10%.

### Applications

The 2004R transmission was used in a variety of GM vehicles, including:

– Chevrolet Camaro
– Pontiac Firebird
– Buick Regal
– Oldsmobile Cutlass
– Chevrolet Monte Carlo
– Pontiac Grand Prix
– Buick Century

The 2004R transmission was also used in some Chevrolet and GMC trucks.

### Performance

The 2004R transmission is known for its durability and performance. It is a very reliable transmission, and it can handle up to 350 horsepower and 400 lb-ft of torque. The transmission also features a compound low gear ratio of 2.74:1, which provides excellent acceleration.

The 2004R transmission is also relatively fuel-efficient. The lock-up torque converter helps to reduce slippage between the engine and transmission, and it can help to improve fuel economy by up to 10%.

### Problems

The 2004R transmission is a very reliable transmission, but it can experience some problems over time. Some of the most common problems include:

– Slipping gears: This is a common problem on the 2004R transmission. It can be caused by a variety of factors, including worn clutches, a faulty torque converter, or a problem with the transmission’s hydraulic system.
– Leaking fluid: This is another common problem on the 2004R transmission. It can be caused by a variety of factors, including a leak in the transmission’s pan gasket, a leak in the torque converter seal, or a leak in the transmission’s lines.
– Shifting problems: This is a less common problem on the 2004R transmission. It can be caused by a variety of factors, including a faulty shift solenoid, a problem with the transmission’s electrical system, or a problem with the transmission’s hydraulic system.

### Maintenance

The 2004R transmission is a very reliable transmission, but it does require regular maintenance to keep it running properly. Some of the most important maintenance tasks include:

– Changing the transmission fluid and filter: This is one of the most important maintenance tasks that you can perform on your 2004R transmission. The transmission fluid helps to lubricate the transmission’s components and it also helps to dissipate heat. The transmission filter helps to remove contaminants from the transmission fluid.
– Checking the transmission fluid level: The transmission fluid level should be checked regularly to ensure that it is at the proper level. If the transmission fluid level is too low, it can cause the transmission to overheat and it can also lead to premature wear of the transmission’s components.
– Inspecting the transmission for leaks: The transmission should be inspected regularly for leaks. Leaks can occur in a variety of places, including the transmission’s pan gasket, the torque converter seal, and the transmission’s lines. If you notice any leaks, it is important to have them repaired as soon as possible.

### Conclusion

The 2004R transmission is a very reliable and durable transmission. It is a good choice for performance applications, and it is also suitable for towing or hauling heavy loads. With proper maintenance, the 2004R transmission can last for many years.