Volusia 04 shuts off at hwy speed

Radiator cooling fans not working? The ECM is protecting the engine by shutting it down.

engine cooling problem... probably..
next time check the engine temp. indicator when the engine shuts down.

GM has a problem with the isturment cluster in their cars

If 20" tires weren't factory, your speedometer and odometer could be off by as much as 20%. Find a stretch of highway and watch odometer between two mile markers and check if it's accurate. Also depending on options, load, quality of fuel and regular maintenance have a large bearing on MPGs also make sure tire pressures are up.

Instrument cluster maybe !

The 04-05 GM truck have a special policy for the speedos. if you have less than i think 70k, your local dealer should replace if for free. Double check this. If not you will have to pay for a new cluster, it runs about 450 or so.

glad i could help!

I would recomend checking to be sure the fuel and vacum lines n the tank are installed correctly, Open the fuel filler and start the bike and see if it has any change on the problem, if so you have a vacum issue.

It is the cable that connects to the trany..

Compare Fuel Estimates for 2006 Mitsubishi Raider Trucks Here's a comparison of EPA fuel economy ratings among the trucks in the 2006 Mitsubishi Raider lineup. As always, your mileage will very likely differ. 2006 Mitsubishi Raider 2WD 6-cylinder Trucks * 3.7L, 6-speed manual, 16 city / 22 highway * 3.7L, 4-speed automatic, 16 city / 22 highway * 3.7L, 6-speed manual, 16 city / 20 highway