I purchased a Scan Gauge for the Yukon before we made out trip out West this Spring. The vehicle had many of the functions built in, but I could not watch them all at once. The scan gauge will allow you to view 4 "gauge perimeters in digital format: examples are voltage (as an economy feature the alternator output decreases and voltage an drop to 12.5 when the engine is running--sort of spooky--and I wanted to monitor this), Average miles per gallon, instant miles per gallon, Transmission fluid temperature, fuel burn rate, coolant temperature, RPM, boost pressure, instantaneous HP, throttle position, vacuum, fuel used, fuel left, range, etc--all of which can make your driving more efficient.
There is also a "trip meter"--which shows current trip, yesterday's trip, total mileage, this also shows items like the average mileage, coolant temp, max speed, as well as average speed etc. Makes log keeping much easier--and if you forget to reset the odometer--it is automatically done after the vehicle is not used for 8 hours.
The gauge also reads out any diagnostic codes, and the conditions which were present when the code occurred.
The one part I have not used is performance--such as o to 60, or breaking-distance, but the latter would be very handy to know when towing to check to see how well the trailer brakes are working....
Just yesterday, I found out that Scan Gauge not makes a unit for diesels, and have put one on the RV.
Both of these plug into the OBD port. (Square one on the gas engines, 6 or 9 pin round on the diesels. Two years ago, I lost all of the analogue gauges on the RV for about 1500 miles, until I found a tech who know how to reset the gauges. The Scan gauge would have monitored this for me, and saved a lot of worry--as well as helping to improve the driving habits.
There is also a "trip meter"--which shows current trip, yesterday's trip, total mileage, this also shows items like the average mileage, coolant temp, max speed, as well as average speed etc. Makes log keeping much easier--and if you forget to reset the odometer--it is automatically done after the vehicle is not used for 8 hours.
The gauge also reads out any diagnostic codes, and the conditions which were present when the code occurred.
The one part I have not used is performance--such as o to 60, or breaking-distance, but the latter would be very handy to know when towing to check to see how well the trailer brakes are working....
Just yesterday, I found out that Scan Gauge not makes a unit for diesels, and have put one on the RV.
Both of these plug into the OBD port. (Square one on the gas engines, 6 or 9 pin round on the diesels. Two years ago, I lost all of the analogue gauges on the RV for about 1500 miles, until I found a tech who know how to reset the gauges. The Scan gauge would have monitored this for me, and saved a lot of worry--as well as helping to improve the driving habits.