HAWG WILD
Full Member
My 07 Avalanche started acting up a few days ago...I have 237K on the original tranny, I average 110 highway miles per day and I've never towed anything behind it. The other night when accelerating from a light I started noticing a very slight slip between 1st & 2nd then when I pulled into the driveway and put it in park I heard whining/humming noises from the tranny. I had a neighbor get under the truck and he heard it coming from the tranny also. I immediately put it into reverse and the noises went away but they started up again when I shifted into neutral. So i shifted back into park and when i did i noticed the speedo flicker to 15-20 mph then back to 0. I shut the engine off and cranked it up again and the exact same things happened again. The following morning i checked the tranny fluid and it was a little low... the dipstick registered in the cold area but the engine/tranny were hot. I had no other option but to drive it to work which is 55 miles away from home. I seemed to shift fine, maybe slipped once but it ran normal to and from work. I haven't had the tranny fluid serviced per GM recommended intervals but it has had the fluid changed numerous times. The fluid was iridescent red when I checked it and had no burning smells.
Any suggestions would be greatly appreciated!
Any suggestions would be greatly appreciated!