code4

iTrader: (30)

I was pulling our boat out of the water up a very steep ramp in 4 low. The engine would randomly loose all power but not die. I had to stop & put it in 2 high & it went away.

I had to go almost wot to get up the ramp but no engine problems. Is there some kind of limp mode caused by being in 4 low?

Boat weighs aroud 7 g's. The pickup is a 2000 z71 5.3.

AKlowriderZ71

iTrader: (22)

No limp mode in low range that I know of. Is this truck stock or modified?

andrew383

iTrader: (14)

I had a problem like that in 4 low one time..Posted about it but got no bites..
Click here

1slowz71

iTrader: (6)

I had that happen to me once as well !

Parke10

iTrader: (5)

some kinda trq/power reduction so that it doesnt destroy the transfer case maybe? all i can think of

code4

iTrader: (30)

It's stock. It would take off fine then it would act like it was going to die. But it kept running. Put it in 2 wd & it was fine. It was so steep that it was pretty hard on the tranny without using low range.

I have hp tuners, maybe i will go remove all torque mangement like i did on my other projects. see if it happens again.

code4

iTrader: (30)

Sounds like you have DBW? Mine is cable so IDK if we have the same issue? Has yours done it since?

1slowz71

iTrader: (6)

mine did it while i was out in the dunes and the only thing i could think of was this ! That it was some kind of torq/pwr reduction ! And mine is dbw if that means anything ! at that time it was completly stock with just a superchips flashpack !

code4

iTrader: (30)

I need a wiring diagram of the TCCM. It would have to have some communication with the pcm to do this.

LBSBLOWN

iTrader: (1)

Back in the winter we had a few snow days and I have a 30mile commute to work so to avoid traffic I would go early and was in 4WD Hi and noticed that radomly the truck would cut off ( I mean the engine and lights and everthing) but only for a second and then back on but would not shut off in 2WD, I tried 4WD HI a few times and it would do it randomly, I removed and cleaned all my frame, chassis and engine grounds I could find and the problem has gone away.
Not sure what it was but I was getting afraid to drive it in 4WD thinking it was going to quit and strand me, it acted like somthing was shorting out or I was loosing power to the truck.