Rear main requires dropping the transmission from the engine in order to access. The speed sensors are either connected to the tailshaft of the tranny or to the transfer case if equipped. When I replaced the tranny in my old 99 silverado I had similar issues to what you describe due to hooking up the wiring harness to the wrong sensors. 4x4 has three speed sensors in the transfer case all with the same connectors. Changed my connections and all was good. Sent from my iPhone using Tapatalk
I had an issue when I swapped the tranny in my 99 silverado. Mine is 4wd and I had incorrectly connected the three speed sensors on the transfer case tail housing. Had brake warning lights on and wouldnt shift out of first. Check those sensor connections.
Check the fuse in the underhood block. I had the same issue on my 99 Silverado. Blower motor resistor did nothing for hi speed. Checked the fuses and found there wasn't even a fuse plugged in. Put one in and it works!
99 Silverado Z71 w/ 5.3, I bought it back in May and knew I had a leak from the driver side front axle seal. Recently I have been noticing a second spot underneath on the driveway. Got under neath and see the rear bottom of the engine coated in oil. Closer look shows what looks like a leak from the oil filter adapter plate? Was surprised I didnt have the oil cooler lines. While under the front it looked like the power steering pump or lines were leaking. Took off the plastic plate under the front and saw this: And this: Water pump starting to go? So my questions are: Is that the oil filter adapter leaking and is the repair just the O rings? Is it the power steering pump leaking or maybe just a seal? How big of a job is that? How difficult is the water pump? I am fairly mechanically inclined and enjoy fixing stuff especially on vehicles. However some things arent worth the time/effort. Thanks for any assistance/info.
I just did the repair as shown in that youtube vid this afternoon. Had a little difficulty with one of the torx bolts and ended up having to dremel it off. Other than having to buy a soldering iron and a tiny torx driver, it was a free fix. So far no lights after the first drive to work!
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