- #CHEVY 6 SPEED AUTOMATIC TRANSMISSION PROBLEMS INSTALL#
- #CHEVY 6 SPEED AUTOMATIC TRANSMISSION PROBLEMS FULL#
If you have questions, contract our resident expert, Arash at 403-XXX-XXXX or use the email form below.Ĭhevrolet Silverado 1500 5.3 (ext. We can solve this for you at the root, so you’ll get a lot more use out of your vehicle without throwing money at the problem. We believe that you should only replace the entire thing if you have no other choice, because a brand new OEM transmission will likely have a similar issue. National Transmission works with local fabricators to create replacement. We also supplement the fusion welds in the the drum with spot-welds, which are then machined flat to maintain rotational and harmonic balancing, while also greatly increasing the structural strength between the two pieces.
#CHEVY 6 SPEED AUTOMATIC TRANSMISSION PROBLEMS INSTALL#
We install a “billet” base to the Torque Converter, which is machined (not welded), which prevents warping and additional friction on the clutch. The National Transmission solution to fixing GM 6L80 and 6L90 Transmissions? That said, there are warning signs to be aware of including slipping, missing gears, shuddering, vibrations, weird smells and loud clunking noises. You’ll notice the moment of catastrophic failure because the truck will suddenly not move under its power. How do you know when the transmission has failed? The additional friction inside the pump from oil shavings cause it to fail, leading to a lack of lubrication inside the transmission, which breaks the whole system. What is happening to the transmission and how is it starting to fail?īasically, General Motors had decided to increase the manufacturing efficiency by cutting corners on welding, and by using too thin metals, which ultimately cause rotational balance issues, which lead to premature wear of the clutch – the clutch wear produces metal shavings, which get caught in the oil pump.
#CHEVY 6 SPEED AUTOMATIC TRANSMISSION PROBLEMS FULL#
Watch the full 6L80 and 6L90 Transmission Teardown and Repair Video The good news is that these transmissions have come through our shop 1000s of times, so we are able to fix the root causes before they cause catastrophic failure. If you’re not overly ‘mechanical’ but you think you might be impacted by this issue.
You are likely to smell burnt clutch material.The truck will not move – Sometimes called P-N-N-N-N-N (Park-Neutral-Neutral….).If the transmission has likely failed (red alert!):.
Not sure if you have this transmission? There’s a list at the bottom of this page. This article focuses on what is happening, why, and touches on how National Transmission has developed a bulletproof fix for this issue. If you tow/haul frequently, or need to ensure as little down-time in your truck as possible, there are pre-emptive maintenance repairs that can be undertaken to prevent transmission failure. If you have a GM Truck or Van with a 6-speed transmission, built after 2006, these issues are likely to affect your truck. Overview of how and why GM Transmissions Fail
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