2008 HUMMER

  • Tiny
  • shawnpat
  • 2008 Hummer

2008 Other Hummer Models

while pulling heavy loads what causes an electronic transmission to down shift to 1st gear and prevents upshift?

Thursday, January 15th, 2009 AT 12:04 PM

1 Answer

  • Tiny
  • Dr Loot
  • Expert
  • 2,332 posts

The throttle pressure needs to be readjusted, I don't think you can handle the operation operation, take it to a transmission shop they will do it for free.

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Thursday, February 19th, 2009 AT 9:44 PM

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