How do i replace water pump on a 2003 cadillac cts n hw do i knw if its no good

SOURCE: replaced water pump. thermostat. radiator, filled

Try backflushing,if this doesn't solve the problem,..then it could be the distributor,they can make the car run hot if the are going out.

SOURCE: Replace 2005 Cadillac CTS water pump

drain the coolant.remove belt by rotating belt tensioner cllockwise. water pump pulley will require a holding tool to keep it from turning while removing bolts. access to air ratchet can sometimes eliminate the need to hold but be careful cause thats a good way to skin some knuckles. also make installation more difficult to obtain proper torque. after pulley is off just a few water pupm mounting bolts remain. clean and dry gasket surface very well before reinstalling.

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SOURCE: 2003 Cadillac CTS cuts off after 20 minutes. The filter, relay

Try having your braking system checked, it may be a vacuum problem. I had the same problem and it was a vacuum problem...it's easy to fix.

SOURCE: how to replace awater pump in a cadillac 2003 cts

water pump is in behind timing cover....drain coolant remove timing cover, remove the water pump bolts. remove the water pump and the seal(note..do not reuse this seal)....reverse procedure for installation

SOURCE: Need to replace water pump on a 03 Cadillac cts I

I do not mean to be hurtful and it will take some time to do. Maybe all day if you have no experience. If you need instructions just maybe you should have some do it for you.