auto trans

[trning]

Hi
I've had my truck for about a month. It's a 2001 2500 cummins turbo diesel with an automatic. It's totally stock. I'm getting the hang of how this thing shifts but I have some questions. at what speed does the TC go into lock-up in overdrive and will it go into lock-up in third with the overdrive locked out?
Thanks for any info.

 

[LSMITH]

To give you speeds we need to know what gears you have, 3. 55 or 4. 10. I have 3. 55's and under light throttle it locks in drive at 30MPH, in OD lockup is at 45MPH. It definitely shoud lock the TC in drive if you have the OD locked out.

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99 2500 QC 4X4 AUTO SB 24V LARAMIE SLT 3. 5 LSD 285-75-16'S SPA Boost/EGT Rancho 9000's Everything but leather NRA Member Great Lakes TDR Member

 

[trning]

Hi
Sorry I have a 3. 55 rear end.