4x4 low. tranny wont shift

[cottontop11]

I put my blazer in 4lo it hit rev limiter and never shifted. I looked at tranny data on my scanner it says 4lo signal disabled. I landed a 4lo input from obs harness to the ls pcm. Tune problem?

[redaddiction]

http://www.pacificp.com/forum/viewto...ight=4lo+works

[tanz45]

Not supposed to shift in 4-lo

[redaddiction]

Not supposed to shift in 4-lo

That would defeat the whole purpose of a transmission. It will and can shift it's in the tune.

[tanz45]

That would defeat the whole purpose of a transmission. It will and can shift it's in the tune.

I understand that you can tune it to. Factory they do not. That's the answer to his question.

Reason being that if you are using 4 lo, you are creeping. If not creeping then use 4 hi.

[vortecyota]

Tanz, sorry man, but there has never been and never will be a factory auto trans, 4lo equipped vehicle that doesn't shift thru all forward gears while in 4lo.

Sounds like a calibration issue to me as well.

[tanz45]

Meh, wrong if I'm wrong. I will still sleep tonight.

Maybe i too had a bad ground from on the position switch.

[88RCLB]

I understand that you can tune it to. Factory they do not. That's the answer to his question.

Reason being that if you are using 4 lo, you are creeping. If not creeping then use 4 hi.

Really? Please quit. You've obviously never used 4-lo, or at least payed any attention. I can barely hit 5mph in 4-lo and 1st, that would be preety useless.

[pl4yboy]

Really? Please quit. You've obviously never used 4-lo, or at least payed any attention. I can barely hit 5mph in 4-lo and 1st, that would be preety useless.

Really, please quit. This guy may be wrong once, but he's also very, very knowledgeable about 4x4 vehicles. He's been around for about 6 years and has done some awesome stuff. People are allowed to be wrong around here once in a while, but you haven't earned the right to be a douche around here yet.

[Frenchy]

There's only a select few of us permitted to be assholes.