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4

Looks like I may have answered my own question last night. I did a deep clean on the throttle body (and as far back in as I could access). The idle is HUGELY improved, though still not perfect on this 28° morning. Is that really all it was? I'd love to hear your comments if you've had the same experience.


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Answer in progress. California Consumer Protections Although California Civil Code (section 1793.03) specify three-year minimum (seven years for sets or appliances priced $100 and up) for electronics and household appliances (regardless of warranty), I could not find similar provision in that particular law for the automotive parts availability. However, ...


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You have a leak in the system. You can't use the pressure to tell if you have the correct amount of Freon. If you were using a recovery machine that weighed the amount of recovered Freon you would see that you are loosing Freon. Not only is Freon leaking out, non condensable gas (ie air) is getting in. This is causing your pressures to look right even though ...


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Along with what @Zaid said, which I agree with, there are two other aspects to worry about: Antilock Brake System (ABS) Traction control (I'm not sure your Sierra has this, but it bears mentioning) The problem with the ABS is, with that much of a difference, your ABS will believe there is a fault with the system and shut it down or might believe the ...


3

Here is the schematic showing how the mega fuse should be wired in, you obviously don't have the second battery option but that mega fuse is on vehicles with only one battery as well. You can tell for sure by checking the option label (approx 3x5 inch white label with black writing with a bunch of 3 digit codes) in the glove box. If you have ZM9 listed then ...


3

In my experience, washer jets tend to clog at the actual jet - first thing I'd do is get a thin needle and try to clear the jet itself.


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In your case if it's diesel it has a turbo, if it's gas it doesn't. At least from the factory. Now that is specific to the year make and model in your question. As for what they look like. Nick has a good explanation. In this picture it's just to the left of the long green tube in the middle of the picture. That tube is connected to the turbo by a short ...


2

Turbochargers look like large snails, and are fitted in the first part of the exhaust, between the manifold and the downpipe. They're often paired with an intercooler, which looks like another radiator... The Wikipedia page for the Suburban suggests that only the Diesel version of the ninth generation were so fitted (which seems odd from a European ...


2

In the end the mechanic discovered it was caused by bad oil, it was not head gasket problem, just clogged drain on the front end of the engine and nearly clogged in the back. So, when the vehicle was tilted forward, the oil failed to drain, and was forced through and burned off.


2

Does the car have a turbocharger? If so, the seals in that could have gone, which would result in oil leaking into the exhaust. I'm assuming that photo is taken from underneath the car looking up? In which case the oil could have leaked from somewhere further up and run down onto the exhaust joint we can see. Does the smoke come out of the exhaust at the ...


2

These vehicles are bad for bad distributor caps. They get carboned tracked and it doesn't take much moisture to cause a no start, but run normally when it's dry. Replace the cap and rotor, check that the vents in the base plate are not clogged and any vent lines (vacuum lines for venting) if equipped are unobstructed.


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Most like a crack in a coil, igniter module, or distributor (probably a coil with a 2000 MY GM vehicle).


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I finally figured out what the problem is here. GM apparently has put in a "PassLock" system that reads something to do with the key on startup. If anything goes wrong (invalid key, electrical problems, etc) the fuel system is disabled for 10 minutes. Just thought I would let everyone know in case this problem comes up again. I have not actually fixed the ...


2

The PMGR stands for permanent magnet gear reduction. I can't find anything on SD255. Doing some searching at Auto Zone and Advance Auto parts showed images that all looked the same, a typical Chevy starter. I would contact a local parts store see if they have one in stock. Pull your starter out bring it with you to match it up and have it tested. Most stores ...


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Sounds like the transmission is slipping. Check the fluid level, it that's correct take it back to the shop that just serviced the transmission.


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Your torque convertor has a convertor lock-up clutch. When reaching a nominal speed and engine RPM the convertor comes on and locks the convertor forming a slip free drive. When you use kick-down or near full throttle acceleration, the convertor clutch unlocks. This allows the stator in the convertor to allow torque multiplication and give the vehicle its ...


2

Something to watch out for Since you intend to buy second-hand, one thing to watch out for is the age of the tire. From personal experience in desert climate, standard tires usually don't last beyond 3-4 years. A premium tire might buy you an extra year. See this question to know how to tell the age of a tire. Putting on a different size A rule of ...


2

This should be what your engine oil cooler lines look like in the vehicle: If the oil leak was coming from the block (middle of the vehicle), part #1 should be what they changed to stop the leak. This would be the most likely place for a leak to occur in this system. The lines going forward should carry oil to the radiator, where heat is exchanged. In ...


2

Since the vehicle is a rear-wheel drive, placing the larger wheels on the front would have the advantage of maintaining normal sized wheels on the driving axle. This means the drive-train is working at its intended rotation. Placing larger wheels on the driven axle would mean the engine would have to rev lower to produce the same speed. This is probably a ...


1

Rear - on each side, the shock will be bolted to the frame and the axle. Front - on each side, connected to the lower control arm and the frame. Easy to get to, but they might be rusty. Spray the nuts/bolts down with PB. I usually just go for whatever is cheap by a well known brand (Monroe, kyb, etc.). Try to keep them all the same brand/product ...


1

It sounds like there is something between the blower and the heater core, maybe even on the core itself. It could just be leaves which have gotten sucked in and are now blocking it. When the blend door is is over to the cold side, it blows air just fine. Yet when the blend door is pushing across the heater core, it is greatly reduced. This leads me to ...


1

I think I'd agree with you about the longevity of the current transmission. It sounds like it's slipping. A transmission shop might diagnose a bad solenoid or something which could be allowing the transmission to slip. Unfortunately, your Yukon came with the 4L60e transmission, which is a weak tranny for what it is required to do. It really is the weak ...


1

It sounds like your not getting a connection through the terminals on the battery. Try pulling them off and cleaning them and see if it makes a difference. It could also be the ground connection on the other end from the battery. There should be at least two + battery leads coming off of the battery. One goes to the starter solenoid. The other should go to ...


1

Id say something is wrong with the transmission from the fluid flush, it is not the easiest thing to flush transmission fluid, and in doing so with certain transmissions you can actually do more damage than good if not done right. What it sounds like is its not in the correct gear and shifting at the incorrect points, this would be caused by many things but ...


1

It is likely a heater core or as mac suggested a diverter valve of some type. Do you smell anything unusual when you run the heat now? If yes, it points more to it being a heater core issue. I believe you have to completely remove the dash to replace the heater core on your vehicle. So, it would not be cheap if you take it to a shop but also time ...


1

First thing comes to mind is a combustion problem. It may be because of the Head Gasket which is a common issue for Sierra. Has your vehicle's oil recently been changed? And also has the gas cap changed? You should first check the oil cap and gas cap because the sensor gets triggerred by the smoke control which also causes the check engine light to blink. ...


1

It could be the fuel pump, especially if the pressure is low. However it could also be that the fuel filter is clogged. It might be about time to replace the fuel filter anyway, I would go ahead and do that no matter what assuming it is easy to get to. (Sometimes they are hidden above the fuel tank and a pain to reach.) If the starter is turning and you ...


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A faulty fuel pump can prevent the car from starting, but you said it wasn't turning around. The starter motor turns the engine even if there's no fuel, so I suspect something else. It could be the starter relais, starter motor or a weak battery.


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I ended up finding manuals here: http://sm.gpona.com:9001/si/home.do Select the Acadia and then drill down through: Service Manual > Driver Information & Entertainment > Cellular, Entertainment, Navigation > Repair Instructions > Digital Radio Receiver Replacement.


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315/70/17 tires will fit on a rim between 8.5in and 10in. These are the recommended widths for sizes. So no, a 17x7.5in wheel would not work. You could squeeze the tire onto a 8in rim and if you wanted that "bubbled out" look. You should be able to even get away with getting them to fit on a little wider of a wheel (10.5/11in) as well but I wouldn't ...



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