Hello all been a bit. Hope every one is ready for Christmas. So my 97 gmc with 5.7 has been acting strange. My truck will normaly slow its self down When heading down hill or when letting off the gas. Kind of like a engines break. It now acts as if it jumps into a coast now. I can tap the gas and not sticking. You guys have any ideas ? It's not a big deal if roads are dry but with ice and ridding the breaks Makes for a fun wrong way slide down the steep hills.