My 2006 DTS want start the inside lights comes on. I drove it to work got ready to leave for the day and it's not doing nothing? Help me please

I had a very similiar issue with my 2009: Had it towed to a so-called Goodyear Certified Auto Center who claimed it was the fuel pump. I replied quite unlikely. Next they said they contacted the local Cadilac Dealship who informed them it was probably the fuse block. The GoodYear Care Center replaced it at a tune of $600; car still did not start. They then call Cadilac when then told then it was probably the throttle body. GoodYear claimed to have cleaned the part. In the meantime the car started. Drove the car home, less than 10 miles, park car for 3 days. Day 3 car would not start had car towed again, this time Cadilac had an open appointment. Cadalic at the tune of $600 replaced throttle body, started the car, drove home about 15 miles, parked car in garage for 2 days car would not start called dealership who informed me nothing they could do, they did what I had asked them to do...They Got The Car Started. Waioted another day, car started...Drove the car to another Dealership who immediately diagonis the now $1200 problem simply as needing a battery!!! Let me suggest having your battery checked by a capable mechanic...I doubt if you will find one at a Goodyear Car Care Center or a Cadilac Dealership in Northern Delaware!

Sounds like a battery problem to me too. I had a similar problem on a Volvo and Roadside service could not start it with jumpers and towed it. They found the battery had shorted out internally, replaced battery and all was OK.

New battery installed still no start i put the caddie in the driveway and before it would start but i could not shift out of park

All dash light on crunk up and ran then died after a new battery and alternator