Pennzoil Q&A

Click here to participate in the Pennzoil Q&A

Recent Topics
Amsoil's Base Stocks, who supplies them?
by donnyj08
26 minutes 56 seconds ago
Thinking of 3 different oils for a 2013 Mazda 6
by mercuryblues
Today at 09:22 PM
Make a cheap 4wheeler for kids
by CourierDriver
Today at 08:53 PM
Lube to ValveTrain: -35C, 0w-30 vs. 10w-30 cold
by ExMachina
Today at 07:18 PM
Brake pads again
by Ndx
Today at 07:16 PM
2015 Tacoma Rear Differential, 4K mi., Amsoil SVG
by btanchors
Today at 07:11 PM
Fram PH9688 ~6500 miles/6 months
by Xrs2zz
Today at 07:09 PM
2015 Tacoma Transfer Case, 4K mi., Amsoil SVG
by btanchors
Today at 07:06 PM
Mustang seat leathers
by buck91
Today at 07:01 PM
Extended OCI 2004 Civic Hybrid
by DaCookieMonster
Today at 07:00 PM
2015_Tacoma Front Differential, 4K mi., Amsoil SVG
by btanchors
Today at 06:53 PM
2015 Tacoma V6, 2.5K, Amsoil Signature 5W-30
by btanchors
Today at 06:45 PM
Newest Members
moirraine, AZDA, muktasir, PgPilot, zeng
55227 Registered Users
Who's Online
68 registered (AZjeff, 01rangerxl, 71Chevyguy, bbhero, 901Memphis, BHopkins, 6 invisible), 995 Guests and 85 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
55227 Members
66 Forums
236793 Topics
3816119 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#3225890 - 12/23/13 07:39 PM 05 Chevy Colorado T-Stat change?
Keith_Stone Offline


Registered: 05/22/11
Posts: 298
Loc: NC
Anyone changed a stat on these trucks? Have to remove the drivers side tire and splash guard, it's a side access with the I5 engine. The housing/stat is one piece. I'm getting a P0128 code on cool days with the temp coming up slowly. I'll get heat only after 6-8 miles. Cooling system is full with clean coolant. Guess I've got a lazy stat that won't fully close.
_________________________
NRA Lifer

Top
#3225897 - 12/23/13 07:48 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
Chris142 Online   content


Registered: 06/05/03
Posts: 12844
Loc: apple valley, ca
I have done a few on hummer h3's with that same engine. Not too bad on those, definatly not as bad as the 3.1 and 3.4 stat
_________________________
02 Wrangler durablend 10w40
87 F250 Diesel Mystic 15w50
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Polaris Trailblazer delo 5w40

Top
#3225900 - 12/23/13 07:50 PM Re: 05 Chevy Colorado T-Stat change? [Re: Chris142]
Keith_Stone Offline


Registered: 05/22/11
Posts: 298
Loc: NC
I understand one of the 10mm bolts is hard access. Will I need a universal joint and couple of extensions? Does the stat gasket require gasket compound?
_________________________
NRA Lifer

Top
#3225902 - 12/23/13 07:51 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
GMBoy Offline


Registered: 11/22/04
Posts: 6796
Loc: Texas
I am with Chris142 as I also have changed these in both H3's and Colorado/Canyons. Not a bad job.

Top
#3225903 - 12/23/13 07:52 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
GMBoy Offline


Registered: 11/22/04
Posts: 6796
Loc: Texas
Originally Posted By: Keith_Stone
I understand one of the 10mm bolts is hard access. Will I need a universal joint and couple of extensions? Does the stat gasket require gasket compound?


No, the gasket is an o-ring. No need for anything to be applied to it.

It's been awhile since I did one, but I think I did use a universal socket and you do need an extension for sure.


Edited by GMBoy (12/23/13 07:53 PM)

Top
#3225904 - 12/23/13 07:53 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
salv Offline


Registered: 04/21/11
Posts: 1228
Loc: Morrisonville, NY
not difficult, but tedious.
_________________________
2003 Trailblazer: Castrol GTX Magnatec 5w30 L25288
1999 Ford Taurus: Supertech HM 10w30 FL-910S

Top
#3225908 - 12/23/13 07:54 PM Re: 05 Chevy Colorado T-Stat change? [Re: salv]
Keith_Stone Offline


Registered: 05/22/11
Posts: 298
Loc: NC
Would you guys suggest a OEM stat?
_________________________
NRA Lifer

Top
#3225915 - 12/23/13 08:02 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
ram_man Offline


Registered: 03/15/13
Posts: 2217
Loc: southern mo
Cant you just buy a t stat? My saturn has the style where the t stat twists and pops into the housing.
_________________________
14 ford focus 9800 miles
95 Dodge ram 1500 5.9l 184000



Top
#3225918 - 12/23/13 08:04 PM Re: 05 Chevy Colorado T-Stat change? [Re: ram_man]
Keith_Stone Offline


Registered: 05/22/11
Posts: 298
Loc: NC
I think I read it's one piece.


Edited by Keith_Stone (12/23/13 08:07 PM)
_________________________
NRA Lifer

Top
#3225943 - 12/23/13 08:32 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
Chris142 Online   content


Registered: 06/05/03
Posts: 12844
Loc: apple valley, ca
Its a 1 piece stat and housing so you cant just buy the stat. The oe ones seem to be failing often. We have been using aftermarket ones and so far they are not any worse than the oe.
_________________________
02 Wrangler durablend 10w40
87 F250 Diesel Mystic 15w50
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Polaris Trailblazer delo 5w40

Top
#3226057 - 12/23/13 11:02 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
crazyoildude Offline


Registered: 07/23/08
Posts: 7008
Loc: new jersey
get it from the stealer they are better sometimes its better to get oem forget that you will be paying 40%-50% more if its not good there goes your engine

Top
#3226323 - 12/24/13 09:38 AM Re: 05 Chevy Colorado T-Stat change? [Re: crazyoildude]
Keith_Stone Offline


Registered: 05/22/11
Posts: 298
Loc: NC
I found this tutorial on the stat change. Should I retain the oem clamps or replace with regular screw style?
http://www.355nation.net/forum/how-performance-maintenance/68410-how-changing-your-thermostat.html
_________________________
NRA Lifer

Top
#3226879 - 12/24/13 09:47 PM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
GMBoy Offline


Registered: 11/22/04
Posts: 6796
Loc: Texas
I bought one for an H3 on Rockauto - AC DELCO that was cheaper even with shipping then the Autozone part.

Top
#3227007 - 12/25/13 05:00 AM Re: 05 Chevy Colorado T-Stat change? [Re: Keith_Stone]
George7941 Offline


Registered: 05/10/05
Posts: 1589
Loc: Toronto, Canada
I have had the OE GM and one RockAuto Delco replacement stat fail, so last time I got the Stant stat from RockAuto and the Stant seems to be holding up well. So at least on the 4.3l engine, my advice is to avoid the Delco stat.
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 locker rear, Formula Shell Synthetic 5W30, Wix 51036, Dexcool.
1987 BMW R80

Staying out of the right lane a lot.

Top
#3233227 - 12/31/13 08:41 PM Re: 05 Chevy Colorado T-Stat change? [Re: George7941]
Keith_Stone Offline


Registered: 05/22/11
Posts: 298
Loc: NC
Changed the stat yesterday. Much to my surprise the stat was fully closed. However in a hot water test it started to open at only 158. I now have a normal temp gauge reading and the P0128 did not reappear. I had 196 near the coolant sensor when checked with my IR gun.
_________________________
NRA Lifer

Top
Page 1 of 2 1 2 >