Tiffany Haney
The 6L80 transmission is a 6-speed automatic transmission manufactured by General Motors and used in various vehicles, including the Silverado, Sierra, and Camaro. While some transmission pans may come with a drain plug, the 6L80 transmission pan does not have one as a standard feature. This has led to discussions and DIY solutions among vehicle owners and enthusiasts, with some opting to purchase aftermarket pans with drain plugs or attempting to add a drain plug to the original pan. The absence of a drain plug in the 6L80 transmission pan has been a point of contention, with some expressing frustration over the inconvenience of not having an easy way to drain the fluid.
| Characteristics | Values |
|---|---|
| Drain Plug Kits | B&M, PML |
| Drain Plug Kit Issues | Leakage, fluid retention |
| Drain Plug Kit Alternatives | Welding/brazing a plug, buying a new pan, drilling a hole and adding a drain plug |
| Drain Plug Kit Prices | $300+ |
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$296.99
What You'll Learn
The PML transmission pan for the GM 6L80 includes a magnetic drain plug
The PML transmission pan for the GM 6L80 is a stock capacity transmission pan designed for GM 6L80 and 6L80E transmissions. It includes a magnetic drain plug and a copper sealing washer, with new mounting bolts included. The gasket is reusable, but it is important to ensure that it is clean and free of any holes or nicks to avoid leaks. The PML pan is designed to use the stock OEM filter, which is held in place by the bottom of the pan.
The PML pan is compatible with 2006 and newer Cadillac, GMC, and Chevrolet cars, as well as GM trucks and SUVs with the 6L80 or 6L80E transmission. It is also suitable for vehicles with or without a dipstick, as there is a fill/level check hole on the rear of the pan. The PML pan is deeper than the stock pan, so it is important to verify that there is sufficient clearance before installation.
The PML transmission pan offers a convenient solution for those seeking a stock capacity option with the added convenience of a drain plug. It is worth noting that some users have opted to weld their own drain plugs onto the pan, but the PML option eliminates the need for such modifications.
Additionally, the PML pan can be further customized with an optional temperature sending unit. This feature requires custom machining and incurs an additional charge. Overall, the PML transmission pan provides a practical solution for GM 6L80 transmission owners seeking the convenience of a drain plug and the benefits of a stock capacity pan.
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The Camaro 6L80 pan comes with a drain plug
There are several options available for those seeking a 6L80 pan with a drain plug. One option is to purchase an aftermarket pan, which can be found on online forums and marketplaces. These aftermarket pans can be welded to include a drain plug, although this may require some expertise and additional equipment. Some users have expressed concerns about the quality of aftermarket pans, noting that they may lead to leaks.
Another option is to purchase an OEM pan with a drain plug. This option may be more expensive, but it ensures a better fit and potentially higher quality. It is worth noting that some OEM pans may still require modifications, such as welding, to include a drain plug.
For those seeking a more straightforward solution, it is possible to purchase a new bottom pan for the 6L80 transmission that includes a factory-installed drain plug. This option offers a no-leak guarantee and can be a more reliable choice than aftermarket alternatives.
Additionally, some car models, such as the 2002 Silverado, come with a factory drain plug, eliminating the need for any modifications or additional purchases.
When considering the addition of a drain plug, it is important to keep in mind the potential benefits and drawbacks of different pan materials. For example, aluminum pans are known for their cooling capabilities and can help extend the service interval. However, some users may prefer simpler and more affordable options, such as the Dorman type pan, without the extra features of aluminum pans.
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The 2002 Silverado has a factory drain plug
A drain plug is a threaded bolt or plug that allows transmission fluid or gear oil to be drained without removing the transmission pan. Over time, the drain plug's rubber washer can wear out, tear, or develop leaks and need to be replaced. This can be done by purchasing a replacement drain plug from an auto parts store. When choosing a replacement drain plug, it is important to select one made of corrosion-resistant materials to ensure reliable service.
There are several options for replacement drain plugs for the 2002 Silverado, including:
- Dorman Pilot Point Engine Oil Drain Plug: M12x1.75 Thread, 15 mm Head, 1 Pack from $4.99
- Dorman Magnetic Engine Oil Drain Plug: M12x1.75 Thread, 15 mm Head, 1 Pack from $7.79
- Dorman - Help Pilot Point Engine Oil Drain Plug: M12-1.75 Thread, 15 mm Head, 1 Pack from $3.79
In addition to purchasing a replacement drain plug, it is also possible to weld a drain plug into the transmission pan. This can be done by purchasing a generic 3/8'' NPT low-profile bung fitting and welding it into the pan. This method requires drilling a hole in the pan and can be more prone to leaks if not done properly.
Another option for draining transmission fluid is to use a topsider, which is a brand name for a vacuum oil extractor. This method does not require lying on the ground and takes only 20 minutes.
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Some users opt to weld a drain plug onto their transmission pan
One user on bobistheoilguy.com shared their experience welding a drain plug onto their transmission pan. They purchased a generic 3/8" NPT low-profile bung fitting on eBay and welded it onto their pan after drilling a hole. They also mentioned that it is important to clean the oil pan before drilling to avoid metal bits getting into the oil.
Another user on the same website shared a similar experience, but instead of welding the nut inside the pan, they welded it to the outside. They also added that it is important to use a copper or nylon washer to prevent leaks. This method is supported by another user who mentions that welding the nut outside the pan provides easier access in case of leaks and future rewelding.
A user on weldingweb.com shared a detailed process for welding a drain plug onto a transmission pan. They recommend cleaning the pan with acetone before welding and using a nylon washer to seal the bolt. They also suggest using RTV after welding to prevent leaks.
It is important to note that some users have expressed concerns about leaks when welding a drain plug onto a transmission pan. One user on bobistheoilguy.com mentions that they would only trust TIG welding for this task, while another user on the same website suggests brazing as a lower-profile solution.
Overall, while welding a drain plug onto a transmission pan is an option for those who want to add a drain plug without purchasing a new pan, it is important to carefully consider the process and potential risks to avoid leaks and other issues.
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The B&M drain plug kits are not recommended due to leak risks
Some customers have reported that the kit effectively helps with filling and draining transmission fluid, making the process cleaner and more convenient. However, others have encountered issues with leakage, specifically around the drain bolt or plug. This leakage can occur even with proper tightening of the bolt, indicating that the issue may lie with the quality of the washers and seals provided with the kit.
To address this issue, some users have recommended upgrading the plastic washers included in the kit to copper washers, using an O-ring, or applying welding, silicone sealant, or Teflon tape. These modifications aim to create a better seal and prevent leakage. However, it is important to note that even with these fixes, some users have reported persistent leaks, suggesting that the root cause may be more intrinsic to the design of the kit.
Furthermore, the B&M drain plug kit may not be a suitable option for those seeking a straightforward and permanent solution for their transmission pan. The modifications mentioned above may require additional costs and technical expertise, and even then, there is no guarantee that the leakage will be completely resolved.
Therefore, it is recommended to carefully consider the potential risks and explore alternative options before opting for the B&M drain plug kit. Exploring other aftermarket solutions or consulting with a professional to determine the best course of action for your specific vehicle may be more advisable to ensure a reliable and leak-free transmission pan.
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Frequently asked questions
No, 6L80 transmissions do not have a drain plug on the pan. However, there are several OEM and aftermarket pans available with drain plugs.
PML manufactures a stock capacity transmission pan for the GM 6L80 transmission that comes with a magnetic drain plug and a reusable copper sealing washer.
Some aftermarket options for drain plugs on the 6L80 transmission include welding/brazing a plug onto the pan or purchasing a new aftermarket pan with a plug.
