there are many reasons, but the easiest to eliminate would be plugs,wires, cap, rotor and coil. after those it could even be a computer problem.
the Tahoe gets 15 mpg city, 19 mpg highway.
Replace your ignition control module under the distributor cap
In the city mine gets 15 MPG
a 1997 Chevy Tahoe gets around 16 miles to the gallon highway and about 10 miles to the gallon around town that's about the best you get out of them.
my friend there are a number of reasons it may not start. first thing as always start with fuel and spark you checked pressure but do you have fuel at the injectors? how many miles? dose it need a tune up? dont overlook the obvious. that should of been done around 50k if you got 60-90k on your truck without tuning it up, then your truck is crying for help. were there prior symptons e mail more info. custommiser@yahoo.com
check the catalytic converter.Sounds like it is possibly plugged.
Adjust the choke on your carb.
fuel + spark = fire = heat, no water = overheat
The 2010 Chevy Tahoe gets around 15 mpg in the city, on average. This mileage can change on the highway, and also can increase/decrease depending on the year.
The H3 gets the best fuel mileage. Everything but the body is a Chevy Trailblazer.
my 2dr 94 blazer 6.5td gets 23mpg's with 204,ooo miles on it
The 2007 Chevy Tahoe has a gas tank capacity of 26.0 gallons. The 4.8 gets 15 mpg city and 20 mpg highway. The 5.3 gets 16 mpg highway and 21 mpg city.