While sitting idle at a stop light my car will sometimes lerch or clunk as if the transmission is acting up. It also will go into limp mode from time to time only allowing me to go 10 mph. But after I stop and wait an hour it runs fine again . Then does the limp mode after a while again? Can Anyone one give me aby ideas what it might be? Thanks.
2004 CTS
3.6L V6
2004 CTS
3.6L V6
