So my friend has an '06 GS300 AWD

I came across a great 3-part youtube video of a guy swapping out the water pump on a GS350. Seemed just as straightforward as changing out the pump on an IS250 (something I might have to do soon to my IS250, hence my water pump investigation.) Took him something like an hour of actual wrench time and no real need for special tools. And the dude did it almost entirely with one hand.

Is it similar with a GS300 AWD? Or is there more effort like discharging the AC to move the compressor, etc? If it turns out he needs to replace the pump in the future I think he would prefer to do it himself if possible rather than pay the $700 or whatever the dealership would want.

Are there any write-ups or videos anybody knows of for this model? I ran a couple searches but didn't come up with any DIY replacement info

 

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

2. REMOVE ENGINE UNDER

3. REMOVE COOL AIR INTAKE DUCT SEAL

4. REMOVE NO. 1 AIR CLEANER INLET

(a) Remove the bolt and inlet.

5. REMOVE V-BANK COVER SUB-ASSEMBLY

(a) Remove the 2 nuts and cover.

6. DRAIN ENGINE COOLANT

7. REMOVE V-RIBBED BELT

8. REMOVE WATER PUMP PULLEY

(a) Using SST, hold the water pump pulley.

SST: 09960-10010

09962-01000

09963-00700

(b) Remove the 4 bolts and water pump pulley.



9. REMOVE NO. 2 ENGINE COVER

(a) Remove the 3 nuts and cover.


10. REMOVE NO. 1 ENGINE COVER

11. REMOVE INJECTOR DRIVER

12. REMOVE WATER INLET ASSEMBLY

(a) Disconnect the 2 radiator hoses.


(b) Disconnect the 5 hoses.



(c) Remove the 4 bolts, nut and water inlet.



(d) Remove the water inlet housing gasket and water outlet pipe's O-ring.



13. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

(a) Remove the bolt, cover plate and idler pulley.

(b) Remove the bolt, cover plate and belt tensioner pulley (marking: L).

CAUTION:

Do not turn the bolt "L" counterclockwise.


14. REMOVE WATER PUMP ASSEMBLY

(a) Remove the 16 bolts, water pump and gasket.

 

BTW you don't need a SST. You can hold the pulley with your hand

 

Thanks, Othic. Looks like the same procedure as all of the GR engines.

Glad the AWD doesn't complicate things

 

jut did mine last week on a gs300 AWD. pretty easy job just follow the youtube video. when reinstalling I used 15ft/lbs on the 12mm bolts and 9ft/lbs on the 10mm bolts since the block is aluminum you don't want to over tighten them because it will strip out easily. not sure if you have a thermostat but I ended up getting mine from the dealer (it was cheaper than the auto parts store) good luck to you