How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Gary Your Own Question
Gary, ASE Certified Technician
Category: Car
Satisfied Customers: 1571
Experience:  Senior Technician at Motorama City Holden
Type Your Car Question Here...
Gary is online now

Is the automatic transmission from the Z18xe compatible with

This answer was rated:

Is the automatic transmission from the Z18xe compatible with the Z18xer engine?

The transmission will mechanically interchange, BUT you will not get it work, because all programming in done by VIN. So there will not be programming available as a GM download, as GM techs would do.

Sorry to say, but better you know this now.


Customer: replied 6 months ago.
if I replaced my old Z18xer transmission with a new Z18xer transmission I would still require reprogramming by GM tech to match the VIN?

What year and model is the Z18XER fitted to?


Customer: replied 6 months ago.
Customer: replied 6 months ago.
AH Astra.

With a straight swap of the correct transmission into a AH, there would normally only be a small program setup via TECH2.

Generally reset TAP cells in the TCM, a GM tech can do this for you.

Hope this helps.


Gary and other Car Specialists are ready to help you
Customer: replied 6 months ago.
Ok. Thank you.

You're welcome.

I have seen many people fit wrong parts to cars that can never be programmed correctly because of a mismatch.

Kind regards