bigdaddy0381
August 20th, 2012, 01:43 AM
I have a 2004 Z71 (5.3) 4x4 with 35 inch tall tire and 4.56 gears. I also have a bigger cam (214/218 .559/.562 111 ) and CNC heads and a circle D stall converter 2600 stall.
My problem is I get a 0894 code above 70MPH on hwy. If I drive 69MPH it dose fine and no code no slipping. On normal driving around town it shifts fine and no slipping. from a scanner it shows the converter is locking but slips only above 70mph in a light roll in to the throttle or if a mat it rpms jump from 2200 to 26 to 2800.The first tuner (with the first trans and other stuff) tuned for everything but couldn't tune out my problem and said it was mechanical or the synthetic fluid I used.I did a fluid flush and I also had the valve body on the first trans changed and still did it, So I changed everything (new trans and TC) and I'm still getting the code and hard shifts until the truck is turned off a few seconds than all is back to normal.the SES light dose not come on unless I really push it.So i'm going to a new tuner this thursday, Is there something I can suggest him look at in the tune to fix this? I'm pretty positive its not mechanical as all those part have been replaced.
any help would be great..
My problem is I get a 0894 code above 70MPH on hwy. If I drive 69MPH it dose fine and no code no slipping. On normal driving around town it shifts fine and no slipping. from a scanner it shows the converter is locking but slips only above 70mph in a light roll in to the throttle or if a mat it rpms jump from 2200 to 26 to 2800.The first tuner (with the first trans and other stuff) tuned for everything but couldn't tune out my problem and said it was mechanical or the synthetic fluid I used.I did a fluid flush and I also had the valve body on the first trans changed and still did it, So I changed everything (new trans and TC) and I'm still getting the code and hard shifts until the truck is turned off a few seconds than all is back to normal.the SES light dose not come on unless I really push it.So i'm going to a new tuner this thursday, Is there something I can suggest him look at in the tune to fix this? I'm pretty positive its not mechanical as all those part have been replaced.
any help would be great..