I can't see on my transmission whether it is a IJ or an IK since it was sprayed with undercoating. I know the truck was built in March 2001.

My issue is that after being on the throttle a couple times, the next time i take off, even with just partial throttle, it doesn't want to shift out of first gear, at any speed, unless i completely let off the gas, then it shifts into 2nd.

I was told by Justin@JDM that the build date is dependant on which transmission was put in. He said the IJ is the "bad" transmission and that there is a Technical Bulletin out on it. The IK is evidently the newer "better" transmission.

I'm a bit iffy on taking the truck to the dealer to have them look at the trans problem even though i'm sure it has to be a common problem. It's an '01 with only 8,000 miles on it and it has been to the track twice.

 

TTT

 

Has anyone ever had this problem with there trans, anyone, anything??? I checked the TSB for the Lightning and found this problem out there (1st to 2nd gear shift not happening). I'm wondering if the dealer has to take care of this mods or no mods since it is a TSB?

 

Did you get a resolution to your shifting trouble? I'm experiencing the same with my 99, only 9,000 miles.

 

The 99 had no issues, it's only the early 01's with the 1J. The other 01 (and all 02s) have the 5X. The prolbem is No second engage. I'm under the impression that when it goes, it's gone, you have no second gear at all. I'd take it to the dealer.

G

 

My 01 has a build date of 04/25/01. I now have 27,960 miles on it with many 1/4 mile passes and burnouts. NO trans(or any others) problems to date but your comment got me to wondering if I have the 1J or the 5X. Can you tell by the build date?

Btw, I had Redline's synthetic D4 fluid pumped in 7,000 miles ago with no 'bad' issues and 'it' helped me to my 12.532. I know you have commented on synthetic fluids in the past and just wanted to add my experinences to your observances.

Dan

 

It's prolly a 5X, the changeover date was 3/16 and from what I've seen, we usually run about 2 days ahead of OTP, so a box built on 3/16 would go in a truck built on or about 3/18. By April you should have had the new one. The way to check is look on the side of the tranny, just forward of the extension housing on the driver's side, there's an ID tag, the code in big letters is your model code, should be either J1 of 5X.

G