Transmission identification on E53, numbers in picture

[Ghost-Flame]

Truck was built November 2001:
3.0
142294 miles

I bought thus truck with 82K miles on it. I'd like to know what transmission it is and if there is any way of knowing if its the original.



The numbers are pretty visible if you have trouble reading zoom in your screen.

Thanks for any and all input and help

[RRPhil]

Yes, that looks like the original transmission.

If you look at the block in the top right-hand corner of the nameplate -

The '2' indicates 2002 model year

The 'G' means it's a GM 5L40-E transmission

'XE' is the code for the E53 3.0i transmission for a vehicle built between 10/01 & 10/02.

('TZ' for 08/99 to 10/01, 'XU' for 10/02 to 10/03 & 'YZ' for 10/03 to 09/06)

Phil

[Ghost-Flame]

Phil,
Thanks a metric ton or £640,040.962621607 (or $a million Bucks)

I'm printing your response and putting it with my manual.

I hear people on this board saying this car could have had 1 of 2 transmissions: a "ZF" and something else.

1) is the above statement true?
2) how can you tell?

[Ghost-Flame]

It just occurred to me that your statement about the transmission most likely being original is interesting since most everyone here says that 100,000 miles and the trans is toast.

I changed fluid at 92,000 and again yesterday at 142,294 american miles, with Mobil 1. DexIV. I guess changing the fluid didn't hurt the transmission. I do a triple drain and fill.

Thanks again for the info

[RRPhil]

Specifically for E53 (rather than E70) –

I don’t think that the ZF ‘box (6HP26) was ever fitted to the 3.0 litre petrol (gas) models, only to the 3.0 litre diesels from 2003 onwards

The early 4.4i & 4.6iS petrol (gas) models used the 5-speed ZF 5HP24 transmission and then the 6-speed ZF 6HP26 unit took over for the 4.8iS

The GM 5L40-E unit certainly had a bad reputation with the 3.0 litre diesel engine but maybe it was a better partner with the petrol (gas) engine in terms of reliability?

Phil