Power Mode/winter Mode

Hi I just purchased a 1999 Isuzu Trooper and have a question.

Its a V6 Automatic 4x4 and I think is the "S" series.

Exactly what does Power Mode do? Is it something that over rides the Over Drive?

The reason I ask is because I can push the winter mode and power mode buttons all day long and they dont do anything. It doesnt seem like it atleast. The way it drives doesnt change. Is there supposed to be an indicator on the dash saying when these options are on?

You are better off asking your questions at Planet Izusu.
http://forum.planetisuzoo.com/

The power mode seems to drag out the RPMs a little and give the Tranny more time to work.
Winter starts out your tranny in a higher gear to reduce wheel slipping.

Hello,
I have a 96 trooper with the 3.2 sohc eng. When I hit power mode, like getting on I-5, it seems to me that the timing is changed and the shift point is higher, it makes it really quick. I have shifted into wintermode and it keeps the tranny in 3rd gear to restrict wheel slippage during icy conditions.

Copter Steve

It only locks out first gear to prevent tire slip.
Forcing only second gear from stop to move vehicle on ice.
Like Ford and Chevy, you put it in second it's locked out of first.
Nothing Magic.
It came out for those that have no idea how to drive on ice back in 1984.
Just the fact a normal automatic is put in gear started the wheels to spin.
Keeping first gear out of the picture has less force at the wheels and 'might' get you going.
At that point, if it's that bad
get the hell off.

The power mode seems to drag out the RPMs a little and give the Tranny more time to work.
Winter starts out your tranny in a higher gear to reduce wheel slipping.

Bingo
Power mode changes shift points so the engine winds out longer. Better for towing.
Winter mode is exactly what he said.