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E85 I live in the corn belt so E85 is about 15% cheaper than gas now but overall economy drops an easy 20%. 15 months ago when we got our first local E85pump it was the same price as gas and has dropped as availability increased. I use E85 because its domestic and clean. You could drink...

steering shaft thump cbrace I don't think it's a safety concern, it just makes you feel like your driving a log wagon! check out this link, 84 posted comments on the same issue. http://www.topix.net/forum/autos/chevrolet-tahoe/TGP0RVD0162MUENMQ

I'm getting 12.1 mpg x 21 gal = 254 per tank in my 2007 Z71 (5,000 miles) And 9.1 mpg x 21 gal = 191 per tank in my 2004 Z71 (63,000 miles). I run E85 in both, mostly in town driving. Only mods on the '04 is a Gibson cat-back and a AEM Brute Force CAI. Both have 3:73 gears. The '04 runs...

It is definitely the intermediate shaft. I had the same issue w/my 04 Hoe. There is a TSB on the very issue. Basically the shaft needs to be pulled, cleaned and re-greased with the new and improved GM grease. My dealer fixed me up even though veh was out of warranty. Even if you have to pay...