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3/17/2008 

 

4248-301-900 - INST 

 

 

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Installation Manual v1.0: 

ATS High Capacity Transmission Pan 

GM Allison Transmissions 

 

Please read all instructions before installation. 

 
If transmission temperatures run too high, consider ATS Transmission 
Coolers, Thermostats and Transmission Temperature Gauges for 
transmission temperature control and monitoring. 
 

 

Figure 1: Allison High Capacity Transmission Pan 

 

1. 

Please make sure no parts are missing out of the ATS High Capacity 

Transmission Pan kit. A complete corresponding list of parts can be 
found on page 6. The bag pictured contains all hardware necessary for 
installation.  

2. 

Park vehicle on level ground, apply parking brake and place 

transmission in 

NEUTRAL

.  

3. 

Position a drain pan under factory transmission to catch old automatic 
transmission fluid.  

 

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