How does the PCM respond when in P-R-N-D-3-2-1?
#1
How does the PCM respond when in P-R-N-D-3-2-1?
Quick question, the park/neutral position switch appears to tell the PCM what gear the transmission is in (according to the wiring diagram). Does the PCM alter the tune or anything else depending on which gear the transmission is in?
The reason I ask is because I'm putting a T56 into my '01 Silverado and can ground the wires of the PNP switch to make the truck think it's in any gear. I have it wired right now to be in drive.
Thanks!
The reason I ask is because I'm putting a T56 into my '01 Silverado and can ground the wires of the PNP switch to make the truck think it's in any gear. I have it wired right now to be in drive.
Thanks!
#3
Hopefully tuners will know if the PCM will change anything in the tune based on what gear it's in as indicated by the PNP switch.
#6
I would like to but I have no idea how. Now the gear indicator says 2ND even when the engine off. When I turn the key to run it goes to drive, pauses for a fraction of a second, then goes to 2ND. Before it would go to drive when on run, then go to 2ND when the engine is running.
Trending Topics
#9
I don't have tuning software. I sent Jim at CalSpeed an email about getting a mail order tune. Hopefully he will know how to tune for the T56. It sounds like you can turn off the gear display on the dash (I heard people calling it the "prndl") in the tune. Not to mention the half dozen codes because the PCM can't find its shift solenoids.
So far I'm loving the T56! Even with stock gears its a lot of fun. 4.56's and Truetrac are going in this weekend!
So far I'm loving the T56! Even with stock gears its a lot of fun. 4.56's and Truetrac are going in this weekend!
#10
Un-Registered User
iTrader: (15)
I don't have tuning software. I sent Jim at CalSpeed an email about getting a mail order tune. Hopefully he will know how to tune for the T56. It sounds like you can turn off the gear display on the dash (I heard people calling it the "prndl") in the tune. Not to mention the half dozen codes because the PCM can't find its shift solenoids.
So far I'm loving the T56! Even with stock gears its a lot of fun. 4.56's and Truetrac are going in this weekend!
So far I'm loving the T56! Even with stock gears its a lot of fun. 4.56's and Truetrac are going in this weekend!
Last edited by mcfarlnd; 05-12-2012 at 10:01 PM.