Recent content by santon

@Mooseman, thanks! Will try Valvoline. The rings could be a problem, considering the age and the mileage of the vehicle.

In my 1997 GMC Yukon K1500, the transfer case is leaking at the seam between the two halves. The T-case is NP241C, I think. It was probably serviced by the previous owner, since I can see red RTV sealant between the case halves. I’d like to reseal it. Do you think it’s possible to split the case...

I replaced the seal today. With the special tool, it was an easy job. It seems like it fixed the leak. Thanks a lot, Mr. Mooseman! There is an additional small leak under the transfer case. I see drops of ATF on the shield of the transfer case. Cannot figure out the exact place of the leak...

Ordered the tools and the seal; will try to replace it. Thanks!

I replaced the filter and the pan gasket. Now I dont see ATF on the bellhousing or on the gasket bolts. The only wet area is around the selector swtch. It has a orange silicone gasket, the gasket is wet. What should be replaced, this gasket or the shaft seal?

I think the old gasket is a cork. The previous owner gave me the filter and gasket kit, GM #24236799. According to the Autozone website, the gasket in this kit is made from Farpak material. I will drop the pan this weekend and replace the filter and the gasket. Do you recommend adding some RTV?

I have these quad headlights. It seems that they are sealed. I found an aftermarket grill for composite headlights. Will this grill fit? Also, what will be required to replace these headlights for plastic, composite ones?

I think I see some ATF on the bellhousing, but I also noticed ATF on some bolts of the pan gasket (a couple of front bolts and maybe one on the front right corner). The previous owner also told me that the pan gasket must be replaced. Maybe it is just the gasket?

I called some shop, and the mechanic told me that sometimes the problem is not only the front seal but also the torque converter and some bushings, so this bushing must be replaced together with the front seal, and the torque converter must be rebuilt. Which bushing is this? Is it indeed so...

The truck was sitting for most of its life. The previous owner used to drive on weekends only. Somebody told me to try to add the additive to revitalize the seal. Is it worth trying?

1997 GMC Yukon 4WD, I noticed a drop of ATF at the bellhousing. There are no paddles under the truck. The transmission shifts fine. The truck has 217k km on the odometer. Is it a front pump seal? Do you guys think I can monitor the ATF level and drive the vehicle meanwhile?

Will check, thanks!

Yes, I did. No misfires at all. The engine works smoothly.

Mechanical health - do you mean the compression measurement?

The coolant temperature is 87-88 deg. C. The thermostat was replaced about 2.5 years ago