I found a 98 jimmy for $1600 its got 175,000 miles tho any kind of on going problems with a 98 with this kind of mileage? cuz i got burned with a 98 blazer, had problems with everything from transfer case to rear end to the heat not shuttin off. what you think about the jimmy?

This is probably a bad TCM module that has a recall on it. Ford extended the warranty on this to 10yrs/150k miles so you should have no trouble getting a dealer to fix it for free if you are under the mileage limit. https://static.nhtsa.gov/odi/tsbs/2017/MC-10095866-2532.pdf

98 GMC Jimmy tranny problems - YouTube

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www.youtube.com/watch?v=oYaUfykzfG4
Oct 31, 2007 - Uploaded by mrockerrock
Fixing my transmission. ... 98 GMC Jimmy tranny problems. mrockerrock ... Never had to replace that and my 98 jimmy has 118000 miles on it.

Use a quality 10w30 oil. If you have over 90,000 miles use a high mileage version.

Tire pressure, Dirty Air filter element, needs tune up, misfire, fuel leak, bad sending unit, etc... you need to troubleshoot logically. Are there any trouble codes? When was the last tune up? How big are your tires? What does it normally get for gas mileage? Etc..

A good engine shouldn't burn more than a quart every 1000 mi. So, 400 mi. is kind of bad as far as engines go. Probably the oil is blowing by the rings and/or there is a seal leak somewhere. The oil has got to go somewhere whether it leaks out or burns in the combustion chamber.

Maybe you could try a high mileage oil that burns off less easily.

If the thermostat is stuck open it would eventually get hot after a while. It's like some people think you can remove the thermostat to keep the engine from getting hot so in theory it could for a little while, however it would eventually overheat. As for the gas mileage being bad yes if it was stuck open and was not warming up fast enough the computer would take longer to go into closed loop, meaning the engine temperature takes to long to heat up so it burns rich until it does warm up enough, however it would be a minor change of mileage say 2 to 3 miles to the gallon. Hope this helps.

what about the other two shocks ??/ are tires over-inflated ? are there over 100,000 miles on it ? if high mileage check further into the suspension componets

if no rev id think tranny is out if u want to try a filter and fluid first tho id add a quat of tranny lucas somtimes it does the trick

Depends on a lot of factors:

1. Gas mileage of your vehicle. If you get excellent gas mileage, 50 MPG +, you can go quite a way. But with a 98 GMC Jimmy, you're probably getting 19 MPG at the best.

2. How you drive your vehicle. The gas mileage means nothing if you are street racing and redlining your vehicle through every gear with the low fuel light on. You definitely won't make it very far like that!

3. The make and model of vehicle. There is no set national standard for when the low fuel light illuminates on a vehicle, so they vary greatly anywhere from half a gallon remaining to 2 gallons remaining. In newer vehicles, the ECU actually takes into account how you drive the vehicle and what speeds you typically go as to when to turn on the low fuel light.

For your specific application, I would say it comes on when you have roughly 1 to 2 gallons left which means that as long as you are driving in a fuel conserving manner you can probably make it about 30 miles or so before you'll be running on fumes. But that should be plenty of time to find a gas station right?!

Hope this helps!

I guess the burning question is , where is the coolant going.
Is this a 4.3 engine? How many miles does the vehicle have?
Has the intake gasket been changed?
I'm guessing a can of "Bars Leak" may cure your problem.
Let me know.
Regards,