Stupid DBW, which one?
Thread Starter
Teching In
Joined: Jan 2004
Posts: 42
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Stupid DBW, which one? Alright, thought I was doing good. Got an 07 LQ4. came with harness and computer, but no TAC and no pedal assembly. Came out of a 2007 Sierra 2500, classic body style. I had originally read that no tac was needed and that it was part of the PCM, but apparently not so. What options do I have, anybody sell these inexpensive or should I just go cable?
D
D
Agreed. You can find a pedal, TAC module, and probably the wiring harness too at a salvage yard. If you wanted to wait a couple weeks, I think I have all that stuff available.
Thread Starter
Teching In
Joined: Jan 2004
Posts: 42
Likes: 0
It doesn't have the front cam sensor and the vin shows it as lq4. My main problem is there aren't any local salvage yards that are worth anything. The few that I have called don't want to mess with pulling the tac module (half of them don't even know what it is) and they won't let me do it. Let me know fastkat, I am still a little ways out on needing them, but I wanted to to have them before I get to deep in it.
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If you can't find a yard my guess is that the part costs less new than you think. Try gmpartsdirect.com
Since you have the vin, you can get the part number and price from your local dealer. Also, they might give you wholesale if you ask.
Since you have the vin, you can get the part number and price from your local dealer. Also, they might give you wholesale if you ask.
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Verdad Gallardo Thread Starter
Teching In
Joined: Jan 2004
Posts: 42
Likes: 0
It came out of a classic Sierra. I checked some prices on the tac module and they weren't too bad and I found some pedals here and there used. Then I just need the harness which I know lots of places sell. The TCM stuff is still a little confusing. The other swaps I have done have been older LS1 stuff and it was nice and simple, DBC, no tcm, and only real difference was early and late.The truck came with a 4l80e, I got a smoking deal on a 4l70e. Not exactly what I wanted, but right price right time. So, going on the consensus that there is no separate TCM, hopefully I can handle that issue with HPtuners. Again, more conflicting info on the wiring differences. From what I can tell you can do a 60e or 70e on something that originally had an 80e with minimal changes to wiring, mainly done with tuning. Again, a little out of my skill level. I am few thrown wrenches away from ordering a harness and computer to simplify everything.
I appreciate the feedback. And by the way it is going in an 89 Grand wagoneer. I have an LS1 in my cherokee and got addicted.
I appreciate the feedback. And by the way it is going in an 89 Grand wagoneer. I have an LS1 in my cherokee and got addicted.
TECH Fanatic
Joined: Jul 2005
Posts: 1,685
Likes: 7
From: Beebe, Arkansas
The truck came with a 4l80e, I got a smoking deal on a 4l70e. Not exactly what I wanted, but right price right time. So, going on the consensus that there is no separate TCM, hopefully I can handle that issue with HPtuners. Again, more conflicting info on the wiring differences. From what I can tell you can do a 60e or 70e on something that originally had an 80e with minimal changes to wiring, mainly done with tuning. Again, a little out of my skill level. I am few thrown wrenches away from ordering a harness and computer to simplify everything.
I appreciate the feedback. And by the way it is going in an 89 Grand wagoneer. I have an LS1 in my cherokee and got addicted.
I appreciate the feedback. And by the way it is going in an 89 Grand wagoneer. I have an LS1 in my cherokee and got addicted.
do this just in reverse
http://www.performancetrucks.net/for...d.php?t=413157
Thread Starter
Teching In
Joined: Jan 2004
Posts: 42
Likes: 0
Things are finally coming together. I found the TAC, harness, and Pedal for about 200.00, brand spankin new. Got the tranny too, but I am a little concerened about switching from the 4l80 to 4l60/4l70 in hptuners. My experience so far has been minor editing, small cam, minor mods. Does anybody have a baseline I can start with, or what is the best way to do this?
Thanks,
DUstin
Thanks,
DUstin
If you still have the pedal, harness and TAC, I'd like to buy them. I have an LS6 bolted into a Mercedes 560SEC and need a TAC, but if your pedal matches it, that would be fine.
