2005 SLE Dexcool
2005 SLE Dexcool
Is Dexcool/intake gasket an issue on 2005 models or did it get fixed before that?
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00Beast
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Re: 2005 SLE Dexcool
Nope, still an issue. Only the L26 (used in Grand Prix's from 2004-2008) got any improvements, AFAIK. The L36 in 2004-05 is still the same as the previous models.
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Re: 2005 SLE Dexcool
Take a look at the edges of the gasket between the LIM and the heads. Is it black plastic or does it look like aluminum? You want aluminum.

WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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95SLE
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Re: 2005 SLE Dexcool
We just did my 04 SLE with 72K on the clock and they were starting to go. They were in good shape but you could see them heading south.

2004 SLE Crimson Tintcoat with Dark Pewter Interior. Mods so far: Wood Dash Kit-Window Tint-CATZ Fog/Driving Lights
Custom Fabricated Stainless Steel Mesh Grill-Painted Calipers-3rd Brake Light Decal-Strut Tower Brace.INTENSE™ Level 1 L36/L26 Performance Package, Intense Shift Kit. ZZP ER Rockers and a HV3. L76 springs
COTM April 2007
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zuluhead
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Re: 2005 SLE Dexcool
take it for what it's worth, but the dealer told me that the current incarnation of Dexcool is a different formula than the original stuff. Also mentioned that, at least in his opinion, most of the problems people had with it is because they didn't change it at whatever the recommended mileage was - 100k I think. As I said, take it for what it's worth.
2000 Bonneville - SSEI
- J Wikoff
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Re: 2005 SLE Dexcool
The current stuff is reformulated. There's conflicting info as to when, though. My theory is 03-04. 03 Grand Ams were included in the class action lawsuit, 04's (like my wife's) were not.

WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
- Archon
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Re: 2005 SLE Dexcool
This is a picture of the LIM gaskets that I took a few years back. They were from a meticulously cared for, easily driven, '99 Olds 88 that had 47,000 miles at the time.
*Gone, but not forgotten* - Black 2000 SSEi, HIR Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, 180 degree thermostat, HS 1.9 rockers, LSx yellow springs, Intense FWI, PCM, shift kit, push rods, and 3.4 Pulley. ZZP Power Log.


