#PML 9517 GM Allison Deep

Volume: 3.25 qts. over stock

Number of Bolts: 12

This PML pan fits 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. Contact us if you have a 10 speed Allison transmission at yourcovers@pmli.com or 310-671-4345.

Gasket

The only gasket we know about for the Allison is the reusable gasket. A flexible, thin rubber cork gasket works best with PML pans. With the thick, 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 PML 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.

PML Pan Drain and Optional Temperature Sending Unit Machining

Click on image to view larger.

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.

The pan has a boss on the inside of the casting that can be machined for a temperature sensor. This is also located on the front edge. The boss can accommodate between 1/8 NPT and 1/2 NPT. If you wish PML to drill and tap the pan, there is a $45 machining charge.

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). We have also heard that filter part number 29537965 works best on some years, such as the 2005 Allison transmissions.

            
Click on an image to view larger. The pan has been cut away so you can see the filter supports and filter.
From left to right:
   Inside of PML pan, showing filter supports
   Filter part number 29542833
   Filter 29542833 with the PML pan on a 2005 Allison transmission
   Filter 29542833 with the PML pan on a 2011 Allison transmission

Our thanks to Revmax Torque Converters for the pictures and assistance.

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.

Information about filters for reference only. Installer should verify transmission, filter, and fitment based on the individual vehicle.

PML Transmission Pan Compared to Stock

  
Click on image to view larger.

These images show this PML transmission pan compared to the stock pan.

Installations

2006 Silverado 2500HD

The Transmission Guy in Palmer, AK, 907-982-0077, put one of his performance transmissions with a PML pan in this 2006 2500HD Chevy Duramax truck.

      
Click on image to view larger.

2004 Silverado 2500HD

John Brown installed our Allison transmission pan on his 2004 Chevy Silverado, 2500HD Duramax. He selected the black powder coat finish. Our thanks to John for sending us the images.

Sun Coast Converters

This image shows the PML transmission pan on a transmission built by Sun Coast Converters. The pan is cut-away so the picture shows the filter supports holding the filter. The filter is the shallow stock filter so the filter supports are at full height.

PML Transmission Pan Features

• Increased oil capacity for cooler temperatures
• Sand-cast aluminum with raised fins
• 3/16-inch thick wall construction to add strength to the transmission case
• 3/8-inch thick gasket flange will not bend when bolts are tightened
• Machined gasket surface for a secure seal
• Boss cast into pan can be machined for a temperature sensor
• Drain hole and magnetic drain plug for easier, less messy maintenance

All PML transmission pans ship with new mounting bolts and a magnetic drain plug.

If you would like PML to machine your pan for a temperature sending unit, there is an additional charge of $45 .