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Buick Rainier, Chevy TrailBlazer, GMC Envoy

18277 messages,  Last post on Nov 18, 2009 at 6:43 AM

You are in the Buick Rainier Forum. Your Hosts are steve_ & tidester

What is this discussion about? Chevrolet TrailBlazer, GMC Envoy, Buick Rainier, GMC Envoy XL, Isuzu Ascender, Oldsmobile Bravada, SUV


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#16867 of 18277
Re: Runs Hot / Ignition Switch [wxman4] by gmfan
Jun 24, 2005 (4:57 am)
Reply

Replying to: wxman4 (Jun 23, 2005 3:19 pm)

My 4.2 L runs a little at or a little below 210 in 90+ heat and 70% humidity. The other day when I was idling in heavy traffic at 4:30 PM in downtown, it shot up to 235, then went back down to 210 within a minute...I could actually watch it move. I thought my waterpump might be going bad, but it has only done this once. I checked my coolant reservior and it was dry! Maybe in the extreme heat it there has been some evaporation. I added about a gallon of water to the resorvior and I have not a temp surge since. Your problem is most likely a faulty temp guage/sensor or a water pump that is going bad. Double check that motor oil level to be safe. The dealer should be able to listen to the water pump (you can too if you buy a type of stethoscope) - if it is "gargling" then the water pump bearings are going bad and it is a matter of time. Let us know.
#16868 of 18277
Re: Runs Hot / Ignition Switch [gmfan] by tblazed
Jun 24, 2005 (6:05 am)
Reply

Replying to: gmfan (Jun 24, 2005 4:57 am)

I added about a gallon of water...
 
Just plain water? There's about 3 1/2 gallons capacity in a full system. A gallon of water added would dilute the coolant mix ratio down quite a bit, which will lower the boiling point, and if you've added plain water in the past, even more so.
 
 I keep a jug with premixed 50/50 DexCool and distilled water for occasional topping off. In 3 1/2 years, haven't had to add more than 6 to 8 oz a year to keep at the full mark.
#16869 of 18277
Re: ( power lock/window switch bulb ) [01_hoe] by malibu99
Jun 24, 2005 (7:52 am)
Reply

Replying to: 01_hoe (Jun 22, 2005 12:15 pm)

Every dealership I call ( parts department not service ) say that the swicth comes with a module that needs to be programmed so the power lock works with the remote I dunno what to do now.
 
to those that suggest I try to replace the bulb, is there a micro bulb I can but from radio Shack and try to fix it myself? Do I need a soldering gun? I want that fixed it drives me batty to see the light not working
#16870 of 18277
Re: Stuck Window and Ext Temp [02envoyowner] by ughgmcenvoy
Jun 24, 2005 (9:23 am)
Reply

Replying to: 02envoyowner (Jun 06, 2005 6:27 pm)

does anyone know the part number to the external temp gauge? also, would replacing the gauge keep it from 'sticking' at one temp? South Louisiana is no place for a questionable a/c!
 
thanks
#16871 of 18277
Re: Runs Hot / Ignition Switch [tblazed] by gmfan
Jun 24, 2005 (10:15 am)
Reply

Replying to: tblazed (Jun 24, 2005 6:05 am)

Yes, I added plain water for a few days and then topped off with some with DexCool. Yes, you are right, it could have messed with the ratio. I probably added 35/65 water/coolant. Maybe I will add a little more coolant to get up it to 50/50.
#16872 of 18277
Re: Runs Hot / Ignition Switch [gmfan] by tblazed
Jun 24, 2005 (2:07 pm)
Reply

Replying to: gmfan (Jun 24, 2005 10:15 am)

it shot up to 235, then went back down to 210 within a minute..
 
Might have just been the fan kicking in for more cooling and it took a minute for it to cool down and register on the gauge. Especially if it stabilized at 210°.
 
If you've been adding in some Dexcool with the water, it's probably OK. You could check it with an antifreeze tester (or antifreeze refractometer if you want to get fancy!)
 

 
A friend of mine had a Taurus with an overheating problem. All signs were the water pump was OK - no leak, no noise- but turned out the impeller was loose on the shaft, not turning or pumping enough. They replaced the fan clutch, thermostat, and radiator before they figured that one out.
#16873 of 18277
Re: Runs Hot / Ignition Switch [tblazed] by wxman4
Jun 24, 2005 (9:52 pm)
Reply

Replying to: tblazed (Jun 24, 2005 2:07 pm)

Thanks all. Lots to think about. Something like that loose impeller is what has me worried, something hard to find.
 
No problems with coolant level, etc. As a side note, the new fan clutch and PCM programming have helped the AC, if not the coolant temp. That is also a reason I am beginning to think it is not an "air" problem, but a flow problem of some sort. If air has been increased enough to improve AC and the coolant does not run any lower then I am thinking the problem is elsewhere. Going in again next week.
 
Thanks
Wxman
#16874 of 18277
Re: ( power lock/window switch bulb ) [malibu99] by 01_hoe
Jun 25, 2005 (7:03 am)
Reply

Replying to: malibu99 (Jun 24, 2005 7:52 am)

So you buy a switch from gmpartsdirect and replace yourself. Then take to dealer for programming (if it really needs it)
You might also find out from dealer who repairs their speedometers. This repair place might have a bulb.
Just throwing out some options.
#16875 of 18277
Re: bushings [ugltrk] by tblazed
Jun 25, 2005 (7:33 am)
Reply

Replying to: ugltrk (Jun 10, 2005 4:06 am)

Does anyone have a source for urothane bushings for front swaybar to chassis, 2002 Envoy.
 
Just available from Prothane - front and rear urethane bushings for the stock bars - front 7-1184-BL and rear 7-1185-BL. Now you can tighten up your stock suspension with front and rear urethane bushings for about $25.
#16876 of 18277
Re: Stuck Window and Ext Temp [ughgmcenvoy] by 02envoyowner
Jun 25, 2005 (8:26 am)
Reply

Replying to: ughgmcenvoy (Jun 24, 2005 9:23 am)

The dealer did my fix on the temp gauge; all is well.
The receipt reads:
Correction: Replace Outside Temp Sensor
Part #: 000 015047946
Good Luck!

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