heres my problem i got a 4.3L v6 on a 99 silverado. i brought a 5.3L v8 (junk yard it was a stolen truck insurance job)i got it complete with engine harnes and computer. i try to start it and it starts but dies immediately. and the only way it will stay on is with starting fluid. so they told me it was the computer so i went and brought another computer(junk yard) and it did the same thing. so i need some help thanks
VATS is stopping you I bet. Get Nelson Performance to tune it and all will be better!
2006 Superior Blue Trailblazer SS AWD, Stock as a rock
Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).
Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning
VATS ! . . . get it tuned ! . .. . and put down the starter fluid !!!!!!
Mine - 04 Crew Cab Silverado 2500, 6.0L - L92 heads/intake - 4L80e - 4wd
Wife's - 08 Trail Blazer LT - stock - every option - slow !
Vid of my old Silverado 6L <---
99 Fountain - 27ft Fever - 502 mag MPI :-)
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I'm questioning this because I just swapped engines I have a 1997 Step Side 4.3 changed it to 5.7 out of a 1999 Tahoe. I'm having the same issue, it cracks up and shuts right down. A guy I that I work with use to work for a auto alarm installation company sent this link to me.
that would only work if you tested the vehicle that to new pcm came from. Otherwise you're still just putting in the sae resistance that the key would, which is for the old pcmOriginally Posted by dogparish
none
When I took the engine & transmission from the Tahoe I pull & plugged the entire wiring harness & computer from under the hood. Dropped it into the 1997 P/U! Should pulling the steering column from the Tahoe and intall into the P/U help any? I still have the Tahoe! Is there anything that I can pull would help?
You're going to want a tune in the future, anyhow, so just break out the credit card and order the NelsonPerformance tune and have him disable VATS.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
is their a way to do it but the cheap way
like put a remote start on it?
Call nelsonperformance and ask for a 1-time tune, I think its called a hotrod or streetrod tune. It does not come with lifetime updates but I think you can upgrade at a later date. Tell him what mods you've done and that you want the VATS disabled.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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