9517-AC | PML Cover Allison Deep Transmission Pan For Chevrolet Silverado 2500 & 3500 / GMC Sierra 2500 & 3500 | Natural As-Cast Finish

For 2001 to 2015 Chevy and GMC Duramax diesel trucks. This Allison transmission pan includes magnetic drain plug and mounting hardware.

Volume: 

3.25 qts. over stock

Number of Bolts:

12

PML designed this transmission pan for 2001 to 2019 Chevrolet & GMC full size trucks with the Allison 1000 5 & 6 speed automatic transmission.

The Allison 5 and 6 speed transmission is found in the Silverado & Sierra 2500 & 3500 with the Duramax diesel or 8.1 liter gas engine. Typical applications are:

• 2001 to 2019 Sierra 2500HD, 8.1 V8 or Duramax Diesel
• 2001 to 2019 Silverado 2500HD, 8.1 V8 or Duramax Diesel
• 2001 to 2019 Sierra 3500 or 3500HD, 8.1 V8 or Duramax Diesel
• 2001 to 2019 Silverado 3500 or 3500HD, 8.1 V8 or Duramax Diesel
• 2007 Sierra 2500HD Classic, 8.1 V8 or Duramax Diesel
• 2007 Silverado 2500HD Classic, 8.1 V8 or Duramax Diesel
• 2007 Sierra 3500 Classic, 8.1 V8 or Duramax Diesel
• 2007 Silverado 3500 Classic, 8.1 V8 or Duramax Diesel

Please check carefully for fit and interference. Vehicle configurations vary.

2006 and 2007 H1 Hummer may have an Allison transmission but lack space for a larger transmission pan.

10 Speed, 2019 and newer: This pan will not fit the 10 speed Allison transmission.

Gasket

The only gasket we know about for the Allison is the reusable gasket from GM, GM part number 29549684. A flexible, thin cork or cork composite gasket works best with PML pans. With the hard reusable gasket, make sure that it is clean and free of nicks or there will be a leak. You may need to file down the gasket bolt holes so the bolts do not bind and the pan seals correctly.

Some installations have used a very thin bead of silicon (RTV) instead of the gasket.

Installer must verify transmission, filter, gasket and fitment based on the individual vehicle. This information provided for reference only.

Included with PML Transmission Pan

PML includes a magnetic drain plug with sealing washer and new mounting bolts with each pan.

PML Pan Drain and Optional Temperature Sending Unit Machining

The drain for this pan is on the front side of the pan for easy access. A magnetic drain plug and all mounting bolts are included with the pan.

Optionally, PML can drill and tap a 1/8 NPT hole for a temperature sending unit. This would be for an aftermarket temperature gage.

The hole would be machined on the front edge of the pan, in the middle, about 4 inches from the drain. In that location, the pan has a boss on the inside of the casting

Filters and Filter Supports

The transmission pan features filter supports that are an integral part of the floor.

Out of the box the filter supports are set up to work with filter part number 29542833. This filter works with the PML transmission pan on all years of the Allison transmission (2001 to 2015).

Other filters are available. Make sure the filter sits correctly on the filter supports such that the filter will not fall out of the transmission nor will it get shoved up into valve body causing damage.

We have also heard from customers that filter part number 29537965 works best on some years, such as the 2005 Allison transmissions. PML has no experience with this filter and has not tested it with our pan.

The PML pan is a deep pan but it is NOT designed to work with what is called "the Allison deep filter".