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Ordered monster transmission th400 ss mega begining fo December last year. It was installed then.

Last week was my first test drive of my newly built 77 k5 (the first time it was ever put in gear). Every moving part on this vehicle is new. A what should have been a happy moment quickly became a major disappointment. Shifted to reverse to move truck out of gurage......

Nothing! Forward gears.... Nothing! I called monster only to speak with a tech representative that knew very little about transmissions and had to put me on hold multiple times to go ask someone about my questions.

Trans was dropped and I inspected converter and internal splines. I will reinstall today. If trans still does not work I will hahve it disassembled by a local professional buildler to inspect case contents and compair to what it should have been. An update will follow.

After reading this blog for quite some time I have come to the conclusion that it would be in my best financial interests to not even waste my time with their warranty. I am not accusing anyone of anything yet, however depending on the outcome of the situation I may take steps to rectify my monetary loss. A new transmission that doesn't move a vehicle at all is not a good thing. I have installed dozens of transmissions and my family has been in the customs business for many years.

Installation error is very unlikely.

I will reinstall, do some more tests, and if it still does not work have it disassembled localy. I will repost the solution as I am still in contact with monster at the moment.

Location: San Jose, California

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I ordered a GM 4L70E and torque converter build for 600 Hp and 600 foot pounds of torque. The transmission gave trouble and went out during warranty.

The people I dealt with were all extremely courteous and helpful. I am receiving a complete new transmission and another torque converter.

Everything these people have said they would do, they have done. They are very reputable and honest.

Guest

Unfortunately mistakes do happen on the build end and on the installation end. Without us having the unit here to inspect on our warranty webcam no one can determine the cause of failure.

The unit was installed in a test vehicle on camera and ran down the highway at 60-70mph. We are the only known company on the planet that road tests our manufactured units before shipping them out. You can go on our live webcams from 8-4 EST from Monday through Friday and see the units being built, tested, packaged and parts pulled..live, not recorded. If you want to post your name on here instead of anonymous, we can try to help you.

Taking a product to someone you didnt buy it from in the first place is guaranteed to go wrong. You didnt but it from them and they didnt make any money on you. Of course they are going to bad mouth the company you got it from and try to make a sale on you. Why does a huge transmission company make commercials with silly noises...because they want people to buy from them that are silly.

Why, so they can rip them off. We shipped out over 1900 units last year and another 1900+ this year allready, we only have a 1% return rate. Of that, 70% or more is installation error, not builder error. Like I said earlier, people make mistakes and we are human here.

Being that the trans was installed in a vehicle on camera and ran down the highway, having all gears at that time, something happened after it left our shop. Going on websites dedicated to bashing companies and posting under anonymous will not get you any farther with us.

If you want real help, post your info on here and someone will contact you. Thanks for reading, dont forget folks there are lots of french models on the internet, dont believe everything you read!

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