I have searched up and down for the right answer but i dont seem to find the correct one i am looking for.

So I work at a remanf. engine company and we have a 5.3 listed for 99-07 silverados and what not. I was tell them how do we know about the reluctor wheel and which one is which. They are saying they will work from those time frames. I am just trying to help out as much as possible here at work, but can you correct me if i am wrong please. From my understanding up till 04 they had the 24x wheel and anything over that is 58x. also they are not interchangeable due to the sensor and of course the wheel being different.

Am I wrong here?

Any help is greatly appreciated!

Thanks!

 

2004 was not the cut off date for 24X. Depending on the specific truck at hand, it could have had a 24X wheel as late as 2007!

 

so is it possible that some of them are 58x?
we have them listed that any 99-07 silverados are all the same aswell as reluctor wheels

If so, can the 58x work on the 24x with out any changes? and vice versa?

 

TSP is correct. And 07 was a mixed year, you could have gotten the 3rd or 4th gen engine during that year.....it just depends on what truck/options you bought. 3rd gen engines should all have the 24 and 4th gens should have the 58. Reluctor wheels as far as I know cannot be swapped between computers. Meaning if the computer was designed to run a certain one, then that's all it can run.

 

You can use this http://www.lingenfelter.com/mm5/merc...gory_Code=C163

 

In the full size GM trucks (CK trucks like the Silverado, Sierra, Tahoe, Yukon etc) GM didn't switch to the 58x reluctor wheel and the newer ECMs until the new body style came out in 2007. As someone else mentioned 2007 was a transition year so both body styles existed in 2007. The earlier body style trucks (I think they are called GMT800 by GM) continued to use the 24x reluctor wheel and the earlier "Warren" PCM (Powertrain Control Module). The newer body style trucks (I think the GM technical term is GMT900) use the 58x trigger wheels and the E38 ECM (Engine Control Module) and then a separate TCM (transmission control module) to control the transmission.

The full size trucks switched from Gen III engines to Gen IV engines when they made the switch to the 58x wheel and the new ECMs. In some of the other vehicles GM confused things a bit by switching to the Gen IV engine but staying with the 24x reluctor wheel for a year or two. So, for example, the 2005 Corvette has the Gen IV V8 LS2 engine but is 24x wheel (E40 ECM). The 2005-2006 GTO and SSR are also Gen IV V8 LS2 with the 24x wheel but the 2006 Corvette has the LS2 engine with a 58x wheel. So even for the same model year and engine designation, not all engines have the same reluctor tooth count or ECM type. This confusion is one of the reasons we ended up producing our 58x to 24x conversion module.

The instructions for our conversion module (that someone else already mentioned) has a fairly complete table of what vehicles/years use which reluctor wheel and camshaft wheel along with pictures of the different parts to help identify them. The instructions can be downloaded here (go to pages 12 and 13 for the table of vehicles):

http://www.lingenfelter.com/sites/li...ons%20v1.5.pdf

If you have the VIN from the customer vehicle it is pretty easy to confirm which controller and reluctor wheel they need based on the engine family code and the calibration files. If the customer has the original engine it is pretty easy to tell from the crankshaft sensor color as well (see the instructions linked to above for pictures etc.).

2007 was a transition year but I don't know if they continued to stretch out the old trucks chassis for longer outside the US. I know on the previous chassis/vehicle transition year (1999) you could still get 5.7L Vortec Gen 1 V8 equipped trucks in Mexico and elsehwere for several years after they were no longer available in the US.

 

Excellent post.