Disclaimer
The community here at 355nation.net urges you to please use caution and seek professional assistance when performing modifications to your vehicle. Before attempting any modification it is advised that you refer to your Colorado or Canyon service manual or contact a certified mechanic as not all GMT355 trucks are the same. The staff and the associated members are in no way responsible for any damages, injuries or other harm inflicted to your vehicle or yourself which may result in attempting these modifications. The posts and content presented on this site reflect in no way the views of 355nation.net or it’s ownership.
![Image]()
A 355nation How To presented by
ESB
Project Name
How-to change water pump
Project Description
show how to change old worn out pump with a new one
Skill Level
easy to Moderate
Project Vehicle
Make: GMC
Model: Canyon
Year: 2006
Engine: 2.8L
Power windows: yes
Sun Roof: No
Tools Needed
10mm socket
3/8 drive ratchet
13mm wrench
Flat head screwdriver
large adjustable pliers or cresent wrench
pin spanner or wedge block of wood (for pulley removal)
Project Time
2 hours or less
Project Cost
around $50 US for the pump and RTV sealant
I didnt take pics of removing the fan shroud but its pretty simple.
Remove the upper radiator hose connecting to the radiator and bend out of way.
Use a flathead screwdriver to remove the small [ shaped clips holding the shroud together.
I think there are 7 total.
After that the entire fan shroud comes out easily.
Next remove the fan. The Chilton manual for our trucks says use a pin spanner to hold the pulley from turning while using a large adjustable plier or cresent wrench to turn the one large nut holding fan on. (COUNTER CLOCKWISE) But I simply placed a wedge shaped block of wood between two pulleys. I found that it was best to leave the belt on those two pulleys to help with grip as the pulley still turned without it.
![Image]()
Once the fan is out the 4 bolts holding the pulley to the water pump come off real easy using a 13mm wrench or socket. Once the bolts were out the pulley came off by hand for me but you may need to tap it with a small hammer if it feels tight.
![Image]()
In this pic without the pulley you can clearly see the water leaking.
![Image]()
Now use a 10mm socket to remove the 5 bolts holding the pump in place.
Slide the pump out.
Clean up the sealing surface very well and make sure no old gasket is left stuck on block.
![Image]()
Place a small layer of RTV sealant to both sides of the new gasket and place on water pump.
![Image]()
Place water pump in position and install the bolts finger tight. Make sure your gasket stays in proper place. torque bolts to 89 in-lbs.
![Image]()
Install pulley and tighten bolts to 18 ft-lbs
install belt. The tension arm has a spot in the middle to place a 3/8 drive ratchet to add enough leverage to easily take the tension off the pulleys to place the belt back in place.
![Image]()
Install cooling fan and torque hub nut 41 ft-lbs
The remainder of install is reverse of removal.
Add coolant to specified level.
On a side note I didn't add coolant or start my truck until three hours after I installed to the pump itself to give the RTV time to dry.
The community here at 355nation.net urges you to please use caution and seek professional assistance when performing modifications to your vehicle. Before attempting any modification it is advised that you refer to your Colorado or Canyon service manual or contact a certified mechanic as not all GMT355 trucks are the same. The staff and the associated members are in no way responsible for any damages, injuries or other harm inflicted to your vehicle or yourself which may result in attempting these modifications. The posts and content presented on this site reflect in no way the views of 355nation.net or it’s ownership.
A 355nation How To presented by
ESB
Project Name
How-to change water pump
Project Description
show how to change old worn out pump with a new one
Skill Level
easy to Moderate
Project Vehicle
Make: GMC
Model: Canyon
Year: 2006
Engine: 2.8L
Power windows: yes
Sun Roof: No
Tools Needed
10mm socket
3/8 drive ratchet
13mm wrench
Flat head screwdriver
large adjustable pliers or cresent wrench
pin spanner or wedge block of wood (for pulley removal)
Project Time
2 hours or less
Project Cost
around $50 US for the pump and RTV sealant
I didnt take pics of removing the fan shroud but its pretty simple.
Remove the upper radiator hose connecting to the radiator and bend out of way.
Use a flathead screwdriver to remove the small [ shaped clips holding the shroud together.
I think there are 7 total.
After that the entire fan shroud comes out easily.
Next remove the fan. The Chilton manual for our trucks says use a pin spanner to hold the pulley from turning while using a large adjustable plier or cresent wrench to turn the one large nut holding fan on. (COUNTER CLOCKWISE) But I simply placed a wedge shaped block of wood between two pulleys. I found that it was best to leave the belt on those two pulleys to help with grip as the pulley still turned without it.
Once the fan is out the 4 bolts holding the pulley to the water pump come off real easy using a 13mm wrench or socket. Once the bolts were out the pulley came off by hand for me but you may need to tap it with a small hammer if it feels tight.
In this pic without the pulley you can clearly see the water leaking.
Now use a 10mm socket to remove the 5 bolts holding the pump in place.
Slide the pump out.
Clean up the sealing surface very well and make sure no old gasket is left stuck on block.
Place a small layer of RTV sealant to both sides of the new gasket and place on water pump.
Place water pump in position and install the bolts finger tight. Make sure your gasket stays in proper place. torque bolts to 89 in-lbs.
Install pulley and tighten bolts to 18 ft-lbs
install belt. The tension arm has a spot in the middle to place a 3/8 drive ratchet to add enough leverage to easily take the tension off the pulleys to place the belt back in place.
Install cooling fan and torque hub nut 41 ft-lbs
The remainder of install is reverse of removal.
Add coolant to specified level.
On a side note I didn't add coolant or start my truck until three hours after I installed to the pump itself to give the RTV time to dry.
