grovey

Thank you for the replies. I should of replaced the pump and cage long ago because of how it acts up. A buddy had a good used setup from a truck he parted, and the plan was to try that cage and a new pump, but i'm pretty sure that's been tossed now. When the tranny acts up the gauges are going haywire as well. The truck has never not started up, and the tranny has never acted up without the gauges going haywire at the same time, but only once can i remember it running rough during the tranny acting up. It has never acted up past like 30-35 mph. Sometimes when the gas gauge acts up it drops to E and a few seconds later it pops back up to full( after a fill up) Sometimes it'll take 5-10 mins to sloowly creep it's way back to the correct reading.

I have a 02 Sierra 1500 Z71 that has a shorting out issue. The gas gauge has been wonky since i bought it. To begin with if you had like 1/8-1/4 tank and stopped hard the gauge would not come back up after bottoming to the E on the stop. The truck would have issues now and then on the start (in my driveway in park) with the wipers not turning off past the slowest intermittent speed after clearing the windshield. Twice the issue also included the truck's engine missing, gauges going haywire , and i had to pedal it to keep it running. Shutting it down and restarting "solved" the problem. The gas gauge will stop working and sometimes take 5-10 mins to slowly come back up. The problem was more likely when i filled the truck up, and as of late filling it up led to the same gauges going nuts, sputtering, and it was making the trans slip in and out of gear unless pushing it to like 4-5k to keep it moving. Let off the gas, and the truck would free wheel like there wasn't a higher gear. I stopped putting much over 1/2 tank in it as a bandaid, but 2 days ago it started doing the tranny thing with just 1/4 tank which it's never done. Twice in a month it's done it in stop and go traffic on the interstate. Turning it off , and restarting it has "solved" the problem all but a few tries. I blamed the issue on a ground? on the gas gauge float, but that doesn't explain it taking a fit while parked in the driveway. Sorry to write a book, but it has alot of symptoms. Anybody had to deal with something like this?

Well I was wrong. It was a leak! A line burst on the outside of driver frame rail. My buddy tried to patch it with a compression fitting, and had to pry it from the clip on the frame to do it. Well... once together that line burst again where the factory bend goes over the rail. Perhaps prying it out made another weak spot . Fixed with a new piece of line from ABS unit to union of existing line. Now I can't get the front brakes to bleed. Just a bubble, or dribble. Been around the truck 6 ? times, and still nothing. Parked it on a steep incline looking for some help from gravity, but no dice. From what I've gathered it could be the ABS unit that now needs bled to get the air outta it. A special scanner is used to remove air from the unit into the lines so it can be bled what I've seen, and rebleed, repeat. But , I saw a video of a guy breaking the lines loose on the unit itself to bleed. Anyone been there?

With the truck running... The pedal goes to floor feeling like mush the last inch. With truck off it feels like it "pumps up" a bit with more resistance, but still goes to the floor. I started the truck after pumping them this way, and they still won't hold the truck in gear past idle.

No leaks seen under hood or truck on drivers side frame rail . I had a hard line replaced there last yr along with all the bleeders and a pass side ABS sensor.

I lost the brakes on my 250K 02 Sierra yesterday. The ABS braking has been acting up the last 4-5 days during say... 1 out of 6 normal stops. Doing the typical GM moaning and groaning it does if it's slippy out or the rd is very bumpy at a stop sign BS. Doing that under normal conditions though. I couldn't make it do this when I tried several times, so not sure why that is. My reservoir is 1/4 " low of fill line, and I don't suspect that's related to this there's no seeps or leaks I can see under the hood or under the truck anywhere. I pulled the ABS fuse and the only difference was it made the ABS and brake lights come on. When replaced they went out. I replaced the ABS module with a used (140K ) unit 10 months ago chasing another issue. They're so weak I just ran over the top of my car ramps because they wouldn't hold even creeping. Anyone had these issues?