Last week on my 04 suburban the two rear side doors as well as the rear hatch and window do not lock. They do not lock from the remote, from the switch on the drivers door or when the transmission is shifted to drive. If manually locked, they will unlock with the remote, door switch, orshifting into Park. Any suggestions where to start?

 

Welcome to the forum.

My 2007 had a similar problem and they had to replace a module.