AlbertaWinterTexan Report post Posted August 3, 2014 We have a 2005 Safari Trek on a Workhorse W20 Chassis with Allison 1000MH AT, S/N 6310384251 I intend to have a complete TES295 AT Fluid changeover done by my local GMC/Workhorse service center. I had this done previously at the same time as installing the deep pan on our Sierra 2500HD . My arrangements with them is that I supply all parts and fluids and they bill me for labor only. I have the following part numbers from the changeover with the Sierra, with possible updates found on websites for online Allison parts vendors and would appreciate confirmation that I have all the correct part numbers before ordering online. Fluid Allison TES 295™ Castrol Transynd® (Or Equal) External Filter Allison 29539579 External Filter Magnet Allison 29535617 Internal Filter (Deep Pan) Allison 29542824 Replaces (?) 29537966 Pan Gasket (Reusable) Allison 29549684 Replaces (?) 29536526 I would like to order asap so early responses will be greatly appreciated. Thanks Share this post Link to post Share on other sites
dickandlois Report post Posted August 4, 2014 Albert, This is a little out of my job description. 29542824-- is listed as a deep pan filter for the second design 2010 and up. Fall in your Year? 1000 series 29549684-- is listed as the pan gasket 2000 and up. Bonded gasket and looks like the only one on file. 1000 series. In the information I have, You having the part numbers helped. They do look like the items needed, but there is often a fly in the ointment! Listed in the Light Truck section and the heavy duty 26k and has a locking pawl. Rich. Share this post Link to post Share on other sites