How to replace water pump (pics) - Page 36 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > The 02-09 "How-To" and DIY Section

The 02-09 "How-To" and DIY Section Threads on Do-It-Yourself and How-To goes here.

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  #351  
Old 10-10-2016, 12:56 PM
tk_427 tk_427 is offline
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2002 Chevy TrailBlazer LT
Light Pewter Metallic 4.2L I6 4X4
Join Date: Jun 2007
Location: Omaha, NE
Posts: 4
Helpful hint for water pump replacement

I just replace the water pump and fan clutch on my 2002 TB with 193,000 miles yesterday. When screwing the new pump on, you might want to replace the 5 10mm screws with new ones. I broke 2 off when torquing them in (89 ft/lbs).

The 5 bolts were $1.09 at my local Ace Hardware and well worth the hassle of drilling out and removing the broken bolts with a broken bolt removal tool which I had to do.

Other than that, this write up pretty much hits the nail on the head for someone doing this for the first time. I took me 3 hours to do, 1 1/2 of those was spent running around getting tools to remove my broken bolts.
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  #352  
Old 10-10-2016, 05:51 PM
Lckent48 Lckent48 is offline
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2009 Chevy TrailBlazer LT
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The torque spec is 89 pound/inches, not lbs/ft. Less than 8 lbs/ft.
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  #353  
Old 11-28-2016, 08:03 PM
benthm7 benthm7 is offline
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TRAILBALAZER Chevy TrailBlazer LT
Onyx Black 4.2L I6 4X4
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Water Pump

I own the 2005 Trailblazer LT 4.2L the water pump pulley is stuck or rusted to the water pump shaft. How can it be removed??? Help please
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  #354  
Old 11-28-2016, 08:09 PM
JTX JTX is offline
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2004 Chevy TrailBlazer LT EXT
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Quote:
Originally Posted by benthm7 View Post
I own the 2005 Trailblazer LT 4.2L the water pump pulley is stuck or rusted to the water pump shaft. How can it be removed??? Help please


Replace the pulley. It shouldn't be more than 10-12$
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  #355  
Old 01-11-2017, 01:36 PM
jbwilson1120 jbwilson1120 is offline
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2006 Chevy TrailBlazer LT
Silver Mist Metallic 4.2L I6 2WD
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Thanks for the write up, but I couldn't break the fan clutch nut using the wrench and hammer method. Mine slipped due to coolant on the pulleys and belt. After I cleaned both, it still wouldn't bust, but turn the engine over.

I found this method and it worked really well.

chevroletforum.com/forum/silverado-fullsize-pick-ups-21/how-remove-fan-clutch-without-fan-clutch-tool-55707/

I used the free end of a ratchet strap and taped it to the clean water pump pulley and hooked it to the lift point just above and to the right. I wound the strap up on the pulley and ad it held really well. It was a cinch to bust then nut.

I've changed the pump once before on my truck and used a big breaker bar and some wire cable to hold. This was much easier.

Enjoy!
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  #356  
Old 01-25-2017, 07:58 PM
Alley Gator Alley Gator is offline
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2005 Chevy TrailBlazer LS
Silverstone Metallic 4.2L I6 2WD
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Water Pump Replaced; Won't start/turn over to leak test

Long-time lurker, first time poster. Excellent instructions, and I agree with the hit-or-miss response to loaner tools. Thanks so much!

05' 4.2L TB 110K miles

I'd been putting off this repair for some time and finally got around to it, and finally got that damn clutch nut freed. When my coworkers asked me what I did over the weekend, I was this close to telling them "trying to bust a nut" but figured that'd land me in HR.

After replacing the water pump, I wanted to run a basic leak test before embarking on the Fan Shroud Adventure. Battery is also starting to go, but I've got a jumpbox, and it does hold enough of a charge to not reset the clock.

When I go to start it, it doesn't attempt to turn over and is just a short electical whine. No clicking, etc. Did my ignition switch fail at the worst possible time? What else could it possibly be?

Also, how much coolant did y'all pour into the radiator cap before starting, or did you let the pump run dry to pull it through the reservoir? I know that might be a dumb question but didn't see a mention of it in the thread.
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  #357  
Old 02-15-2017, 05:18 PM
genso genso is offline
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trailblazer lt Chevy TrailBlazer LT
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what type gasket sealer

2005 trailblazer. I have new water pump and what looks like a rubber/metal gasket. should I be using a sealer? what type? I also read a lot of posts about replacing water pump bolts...is that the case usually?
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