2004 volvo xc90 firing cylinder order - 2006 Cadillac CTS 2.8

A Haynes manual for e year,make,model of your vehicle from your local auto parts store will tell you.

Think you'll struggle to get a part number for the actual full rack but there are service kits available for them mate
Service kits steering box Fits 2004 Volvo XC90 2 9l 6 cylinder Turbo T6...

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1-2-5-4-3

first code means random/multiple misfire cylinder (s) detected
second code means misfire detected number 1 cylinder, third code, miss=fire number 3 cylinder fourth code misfire number 4 cylinder
causes can be spark plugs, HT leads, ignition coils, injector, wiring fault, low compression/ engine mechanical fault

Antifreeze out of the exhaust would be from bad head gasket.

My apologies for the delayed response...
If you still need the Firing Order:

For the 2.4L:
Firing Order:
1-2-4-5-3

Cylinders:
(Rear of Vehicle)
1-----2------3------4------5
Front of Vehicle

replace the ignition lock cylinder