I noticed today that my 1999 c5 6 speed was dripping a little bit from the bottom, is this a hard job i am very mechanically inclined and do all my own stuff I also have a 73 and 75 whole different story, but this is my first lsx car do i need any special tools or anyhting?


Thanks

 

Sent you a PM.

 

The job is very straight forward. You will need the correct torque specs and some NON- 73/75 metric wrenches sockets!

"Install the water pump bolts into the engine block. Tighten
Tighten the water pump bolts to (first pass) 15 N·m (11 lb ft).
Tighten the water pump bolts to (final pass) 30 N·m (22 lb ft). "



One thing that you always need to keep in mind is the air ducting between the TB and MAF MUST be completely sealed (NO AIR LEAKS),, So, be careful in that area during reassembly:

Some more tips:

Flush the system and refill with any (Organic Acid Technology) OAT type coolant like DEXCOOL and the proper amounts of distilled water.

I used a wet and dry vac to remove some additional fluid from the block to help get all the OLD stuff out.

Consider a lower temp thermostat (160-180 deg) "I chose the 180 deg"

Note! Your old pump may be sealed to the block with a black fiber gasket. There a royal BITCH to scrape off the block (probably the most difficult part of the entire procedure!) Its replaced by a much better O ring type metal gasket.

There are TWO different pumps. Late and early. Make sure that you get the correct one. If you get a late model housing, you will need to purchase the correct T stat for that housing.


Water Pump Replacement
Removal Procedure





Caution
Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.


Disconnect the negative battery cable.
Disconnect the intake air tempeture (IAT) sensor connector.
Disconnect the mass air flow (MAF) sensor connector.



Remove the air intake duct/cleaner assembly.
Remove the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
Drain the cooling system. Refer to Draining and Filling Cooling System .



Remove the radiator inlet and outlet hose clamps from the water pump.
Remove the radiator inlet and outlet hoses from the water pump.



Remove the heater hose clamps from the water pump.
Remove the heater hoses from the water pump.



Perform the following steps on vehicles equipped with a bolt on water pump pulley.
Remove the water pump pulley bolts.
Remove the water pump pulley.




Remove the six water pump retaining bolts from the engine block.
Remove the water pump.
Installation Procedure




Clean the water pump gasket surfaces.
Install new water pump gaskets with the tabs up.
Install the water pump to the engine block.

Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.


Install the water pump bolts into the engine block. Tighten
Tighten the water pump bolts to (first pass) 15 N·m (11 lb ft).
Tighten the water pump bolts to (final pass) 30 N·m (22 lb ft).




Perform the following steps on vehicles equipped with a bolt on water pump pulley.
Install the water pump pulley.
Install the water pump pulley bolts. Tighten
Tighten the water pump pulley bolts a first pass evenly to 10 N·m (89 lb in).
Tighten the water pump pulley bolts a final pass to 25 N·m (18 lb ft).




Install the heater hoses to the water pump.
Install the heater hose clamps to the water pump.



Install the radiator inlet and outlet hoses to the water pump.
Install the radiator inlet and outlet radiator hose clamps to the water pump.
Fill the cooling system. Refer to Draining and Filling Cooling System .
Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.



Install the air intake duct/cleaner assembly.



Connect the MAF sensor connector.
Connect the IAT sensor connector.
Connect the negative battery cable. Tighten
Tighten the negative battery cable bolt to 15 N·m (11 lb ft).

Program the Transmitters. Refer to Transmitter Programming/Synchronization in Keyless Entry.
Start the engine.
Inspect the water pump for leaks.

--------------------------------------------------------------------------------
Document ID# 361646
1999 Chevrolet/Geo Corvette


BC

 

Bill,
Do you have the part number for the whole water pump assembly including the thermostat and cast el. A friend is in need of one and can't seem to find a GM water pump, only aftermarket types.
Thanks

Frank

 

GMPartshouse.com

 

I agree 100% www,gmpartshouse,com.. Call Gene or Patrick! They will fix you up with the knowledde and part that you need!!

Bill

 

It's doable. A little bit of a PITA cause you'll be leaned all over the fenders while wrenching. Not hard at all though.

 

I've tried the web site, no water pump. Water pump assembly brings you to the gasket or not available at other link. I guess a call is needed. just trying to help a friend out and forward a link

 

There were some early part numbers that were superseded and may not be available. A call to Gene and Patrick will get you the best parts for the best price.

BC