The scariness starts at 350 for me...seriously, I'm beginning to think I have a freak Blazer. Just passed the 71K mark and better gas mileage than anyone else has posted

 

lol wait until you have subs and watch the gas gauge go nuts

I think it has to do with the meter in there and if you are on uneven ground it will be different everytime

 

i'd say it's worht it to do it yourself by dropping the tank and then taking out the sending unit fuel pump module. then replacing the sensor on the fuel module. doing this is more of a convience to know more acurately how much gas you havein your tank but i think it's def worth it.also by doing it your self it'll be alot cheaper

 

I get about 370.

 

I used to get about 230 miles/tank. We put new fuel injectors lines on it, a few months ago. Now I get about 260. Looong interstate trips, I can get 300-315. 20MPG is about the best I've ever gotten. Usually 13/15 city, 16/20 highway.

 

My 97 had the guage go out several years ago and dealer quote was $500+ to fix. Used the trip odometer for fill up at 300-340 which was usually 17-18 gallons. Then abourt 6 months agofuel pump went out and after an $600+ replacement of the fuel pump module, my gas guage now works. It's irritating, but the trip odometer is a cheap remedy until you get motivated to pull the tank, or like me, replace a faulty fuel pump. Nice to know GM is now providing the fuel guage module.

 

I have this problem, but it is only when in park, and mine is a 2001. I'm pretty sure this is normal, b/c when you put it back in drive it fixes itself

 

It's not normal... Amusing, but not normal, lol, might be something a little loose, but I wouldn't worry about it until it's perma-fritzed.

 

Vagnozzi, you need the fuel level sensor in the tank also. I have not figured out why it happens only in certian gears, but it does, I have replaced many of them that do that, and it has fixed them all. Man you guys getting over 260 miles to a tank, I wish I could get that!!! KLBlazer07,I wish I could even get to 300, but 370 HOLY COW!!!!!! that is amazing!! Why don't you bring yourBlazer to me so I can check her over and copy the results!! When I had my 92 S10 with 4.3 5spd, I averaged 25 mpg, and about 380 miles per tank, but not with my Blazer!! I get 16 mpg, and what amazes me though is when I tow my pop-up I only fall about 1 to 1.5 mpg. So I really cannot complain about that. Korey.

 

It sure is nice to know I'm not the only one with this problem! It not only does that, but it also gets sluggish sometimes. Especially when it's been sitting, like at a restaurant or store or getting gassed up. I swear I could get out and push and it would go faster!