mleekamp wrote:
BurbMan wrote:
They have done worse....in 2002, they changed the pin layout within the connector.  So, a 2001 pigtail will plug right in because teh connector is the same shape, but nothing will work because the connections have been rearranged.
I had this happen...our 01 Chevy was wrecked, got a new 02, and plugged right in.  Problem was, NO TRAILER BRAKES!!!!  Had to pay $60 at a dealer for the new harness.  I still curse that.
Same thing going from our 02 Avalanche to our 00 Yukon XL 2500.  Everything worked except the trailer brake signal.  $12 on Amazon for a new harness from Tekonsha, but it was a pain to use the manual slider for brakes on every stop on that first trip.