ive owned a gtp with an l67, but today i was offered a 97 buick riviera for cheap, problem is the engine wont start. battery looks good all electronics come on, no security issues, i can hear a noise comming from the battery which is in the backseat?(strange design by buick) but the engine itself does not crank, and makes no sound. i tryed tapping the starter with a hammer but had no luck. any ideas? i was thinking the starter as nothing else seems to be having an issue, ive also checked fuses and all are in good shape.