'09-'11 Suburban Gear Change??
September 12th, 2011, 5:02 PM
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'09-'11 Suburban Gear Change??
Has anyone with an '09-'11 1500 Suburban changed the gearing? I've got 3.42 gears and don't think it tows like it could with the right gearing. If so, does the TCM or ECM require reprogramming?
TIA
Gary
TIA
Gary
Last edited by GeeDubb; September 12th, 2011 at 7:46 PM.
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