I have 07 Colorado. Today I went over a bump and instrument panel went blank. When I came out to go to lunch, there was very low voltage on the battery. Upon taking battery to have it tested, the clerk told me that Chevys were having ground strap problems and that there was a recall on them. My local service adviser said he did not think he had seen a recall notice. Anyone out there have this problem? Also, can't find the ground strap between the block and frame. Any ideas?