Alkajd

I got the Curt 13335 hitch from etrailer they have a 110% low price difference it was 157. and I founnd it for 116. and etrailer refunded 45. I think the total 112 the harness came with the Journey but it doesn't work had it flashed today and nothing they said I had some codes that might turn off the circuit. Is this true? Or BS like suggesting I should pay to flash it? Any ideas???