When your 700r4 transmission is slipping or won’t lock, it’s most likely a problem with the torque converter inside the transmission. Here I will give some common symptoms of a bad 700r4 transmission, and add a short line underneath it to explain where you should start looking for the issue. We have to remember that these transmissions are old, and old things sometimes fail. 700r4 Troubleshooting Guide 400RĮven though the 700r4 transmission is durable and reliable, they do sometimes fail.
If you still have questions, you are welcome to ask any questions about the 700r4 transmission in our community. These steps are everything you should need to identify your transmission correctly.
700R4 TRANSMISSION PROBLEMS SERIAL
The last numbers and letters indicate the manufacturer, rebuild, manufacturing, and serial number.
700R4 TRANSMISSION PROBLEMS TV
The last way to identify if it’s a 4L60 or a 700r4 is to look at the transmission’s rear for the Aux TV Cable or the wirings, as discussed before. If you find three letters, the transmission was made between 1986-1993.If you find two letters, the transmission was made between 1982-1985.These numbers tell us the application, engine size, wiring type, and solenoids. The next 2 or 3 letters identify the model of the transmission.RELATED: 4L60E vs 4L80E Differences: Swap & Information K-Case Differences The transmission is pretty reliable and can handle torque up to around 350nm~ remember that these are only the reported numbers, and it can be higher or lower depending on the age and maintenance. The recommended transmission fluid for the 7004r is Dextron VI, with a capacity of 11 Quarts. The transmission case has 16 bolts and a transfer case of aluminum. It had a case length of 23.5″~ and a weight of 170 lbs~ without fluid inside it. The transmission was made between 1982–1992. In conclusion, the 700r4 transmission is a 4-geared hydraulic automatic transmission with the 4th gear, an overdrive gear (30% increase). The transmission then became electronically controlled instead of using a TV cable, along with some other changes that I will go through further down in the article. In 1991, the 700r4 transmission was replaced by the popular 4L60 transmission. The 700r4 transmission is not electronically controlled it uses hydraulic pressure with a TV cable, which acts as a throttle position sensor to control the gear shifting. Due to its popularity, it is also quite effortless to find replacement parts for this transmission. If we mentioned all car models this transmission was installed in, the list would be very long.Ī lot of people like the 700r4 because of its excellent durability.
You usually find the 700r4 transmission in GM cars like the Chevy Blazer, Suburban, Camaro, Corvette, Impala, and even in Oldsmobile Cars and many more. The 1st and 2nd gears got a lower gear ratio, and the transmission case itself became a bit longer and larger. It is based on the TH350 3-speed automatic transmission, and features an overdrive fourth gear that provides a 30 percent fuel economy improvement over the TH350.
The 700R4 transmission is a 4-speed automatic transmission that was introduced by General Motors in 1982. GM Cars - GMC, Chevy/Chevrolet, Buick 1982-1990īlazer, Suburban, Camaro, Corvette, Impala, Oldsmobile 350 and more
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