Hi all, i got a problem with my 2007 suburban, started off with getting reduced engine power when parked turned off the engine read the codes (p1682 and p2101) cleared them and started back up fine drove home, morning after was going for a drive and car wouldnt start, cranks but doesnt start, now im only getting code P1682, i have replaced the start switch, crank relay and ignition relay, i have a new throttle body and tryed swapping battery out, anyone got any ideas?

Thanks