Positive terminal keeps getting corroded even after 3 weeks.

If the battery discharges by leaving it shut off you can rule out the belt or the battery terminals. The battery is new so it shouldnt be bad, and you have had it tested along with the alternator so both of those should be ruled out as not being problematic. It sounds like you have a massive parasitic drain in your electrical system. Ultimately something is closing the loop between the + and the (-) sides of your battery via your extensive electrical system. Granted, finding the source of the problem will be headache lol. Hope this helps

Research your factory battery cold cranking amps usually listed on the top of your battery or compare owners manual battery spec. Wise to meet/exceed these amps with your replacement battery. ie Autozone Gold is a 1000 CCA battery in many appications. 3 year free replacement etc...compare prices at Costco, AutoZone, Interstate, sometimes the Sears Diehard, but can be limited in applications. I use the Autozone Duralast Gold, about $108. w/exchange. Don't be surprised to be able to increase the CCA by a couple hundred over the factory battery...this is a good thing:) Hope this helps.

Pur hot water over the conections, and then spray it whit a WD-40 or something on the terminals; try with a battery charge.

Many batteries may only last around three years. Check battery voltage at rest before starting. Any voltage in the low 12v range may be a sign of a faulty battery.If low voltage present, then perform a parasitic drain test:1) Disconnect battery POSITIVE terminal and connect ammeter in series, between battery positive terminal and positive lead.
DO NOT START THE VEHICLE!!

2) With all vehicle doors closed, alarm off, lights off, radio off, and all other accessories off, wait for around 20 minutes and then read the ammeter. A healthy system should read about 0.03 amps and little more. If reading more, then the vehicle could be suffering a parasitic amp drain, and you will need to locate this issue.


3) Reconnect battery when finished.


If no major parasitic drain present, yet low battery voltage then:


4) With vehicle started, check the voltage charge from the alternator. Connect voltmeter to battery terminals and take reading. A healthy system should be charging in the range of 14volts or down to around 13.5 volts. If reading around 12 volts only, then check and replace alternator.

Sears Diehard or Interstate would make a battery for your vehicle. Look for something with over 600 cca and you should be ok for the winter.

Diehard makes a Platinum battery, but it costs over $189.99.
Diehard Gold batteries are like $109 or so.

Walmart sells batteries that are comparable to the Diehard Gold for under $100.

However, I just bought a Platinum battery for my 1997 Cadillac Deville Limo and it seems to work alright so far and has a 4 year free replacement warranty.

In general, the more you pay, the better the battery up to the 'best' which is the Diehard Platinum.
Walmart and Interstate do not offer a battery that has as long of a warranty or as good of a design as the Platinum from Diehard which uses proprietary technology to get a better warranty than normal.

The Platinum name in the PT Cruiser has nothing to do with the Platinum name for Diehard, by the way.

Good luck on finding a suitable replacement battery for your 2004 PT Cruiser Platinum.

I put a Diehard Platinum battery in mine for about $189.99 plus tax at Sears Holdings or Sears for short.

It has a 4 year free replacement warranty, the best in the business, and has higher cca's than the Gold version of the Diehard which is equivalent to the best that Walmart sells.

Good luck on buying the 'best' battery for your Cadillac.

The best battery offered by Sears costs about $189.99 and has a 4 year free replacement warranty (Platinum).
One can get the Gold by Sears for $109.99 or so which has higher than oem cca.

Probably the Gold would suit your needs, but if you have the extra money, the $189.99 Platinum should last for many years to come, and uses advance technology.

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Product Description The P-5 Platinum Automotive Battery from DieHard features 100 minutes of reserve capacity and 740 cold cranking amps. Its corrosion-resistant high quality tin-coated brass terminals provide reliable starting power in all weather conditions. Its rugged, military-grade construction features robust casing for increased compression and offers superior vibration resistance, making it ideal for off-road applications.

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i would go to the auto parts store and have them check your battery as it sounds like the cranking voltage is not there or not what it should be

Does the $180 include the cost of the new battery? If it does, that actually isn't a bad price. I checked autozone site, new battery is $150 and it's a 30 minute job to remove and replace, due to the battery being positioned where a lot of stuff has to be removed. It seems that GM does this more than other manufacturers, many GM models have batteries under back seats, or in the trunk. They should make access easier. If the $180 is labor only, I'd go to a private garage or service center and shop around for a good price, making sure they know what's involved. You could also go to alldatadiy site and subscribe to repair info on the Yukon, get step by step instuctions with diagrams and do this yourself. Good luck!

glue guy the starter is probably bad..id replace it

michael buck what year and engine do you have