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Chris (aka- Moose)
Chris (aka- Moose), GMC Technician
Category: GM
Satisfied Customers: 45107
Experience:  16 years of experience
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Had tranny rebuilt with 375, ooo miles on 2005 duramax one

Customer Question

Had tranny rebuilt with 375, ooo miles on 2005 duramax one ton. Added a new radiator with thermostat switch set at 190 degrees. Arizona, I pull a trailer with 5k to 10k lb loads. Yuma from phoenix, 193 miles. Prescott, pulling mountain grades. 100+ degrees. I have a heat problem when temp gets over 100 degrees. 220-230+. And temp of tranny will only go down if I stop and sit. Tranny shop says to try flushing the lines out in the radiator and a larger aluminum oil pan with finns. At my expense. What if that doesnt do the trick? Rick
Submitted: 10 months ago.
Category: GM
Expert:  Chris (aka- Moose) replied 10 months ago.

Welcome, I'm Chris (aka Moose). Experts aren't employees / agents of Just Answer. We are independent service providers using the Site to sell their Expert knowledge to Customers. I strive to provide EXCELLENT 5 STAR service to you, let me know what's needed from me so your pleased with my assistance and will rate me Good or Excellent.

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  1. On these mountain grades are you staying above 45mph?
  2. Is the converter clutch staying engaged on these mountain grades?
  3. Is there alot of up and down shifts occurring on these mountain grades?
  4. Is that 220-230 the engine coolant or transmission oil temp?
Expert:  Chris (aka- Moose) replied 10 months ago.

Hello again Chris here,

1) When customers come to Just Answer the website and the experts want them to have a great 5 star experience.

2) We also want them to be so pleased that they come back for future needs.

3) I have the feeling you were not pleased with my help and or need me to help more. If so please do reply.

4) I have an option to upload diagrams, repair guides, find a repair facility, or call you if that would help.

Thanks Chris