Nice site and hope to be a regular since I have a "sub" now. Its a 1997 Suburban 1500 4x4 What does the "SLT Package" mean? Is it safe to pull a trailer weighing 3400lbs in overdrive? The manual says i can, but really not sure. I have a clicking type sound in the front end at very slow speeds...any ideas? Its louder in 4x4 I really never worried about towing before because i had a old school SUB that had a big Bloack and 400 tranny. This small block with OD tranny scares me a little.