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  1. S

    Fuel pump check valve

    Hey all, 03 Z71 flex fuel - just a beater truck I am trying to keep going as long as possible! Changed fuel pump a few months back with the correct Carter pump for Flex engine. I also changed the filter and the lines that go from the filter to the pump. Since I changed the pump truck has been...
  2. S

    Passenger rear door won’t unlock

    Hey all, 03 Z71 Tahoe rear passenger side door will not unlock. When you hit the unlock button the actuator makes a noise but it does not unlock. If, however, I push the unlock button and hold it down the door will usually open. Any ideas what on what is causing this?
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    Fuel filter feed line

    Hey all, So when changing my fuel filter on flex fuel system the fuel line on the feed side snapped when I was unscrewing it from filter. I’ve been looking for a replacement hose but cannot find a part number. It is the line which goes from the front of tank to the filter - any one k ow a part...
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    Inner fender wall plastic retainers

    Hey all, Basically when I removed the inner fender wall most of the plastic push retainer rivet things that hold it one broke. I cannot find any information on the size and type of these - can anyone help me out?
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    Dreaded P0300 possibly solved

    Hey all, so my 03 z71 hoebag has been acting up a bit lately. Other than a slightly rough idle there have been no drive ability issues. However, at certain, seemingly random times while on the highway the CEL will sometimes flash for a bit and sometimes I will get the P0300 code. I noticed that...
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    Wire pulled out of neutral safety switch - how to put it back.

    Hey all, So the green wire from the neutral safety switch came out of its connector. The terminal is gone as is the rubber gasket that prevents water from getting into the connector. I've never played with wire connectors like this. Where would I get the terminal/which terminal do I need, and...
  7. S

    (Solved)No turn signals...hazards work fine.

    hey all, So went out today and had no turn signals, not even a click from the flash module. The 4-way hazard light work perfectly. So removed the flasher module and tested the turn signal wires...at the module. I got .110 colts on both. Is this normal? I would expect the. Outage to be at...
  8. S

    2003 Tahoe..No crank: neutral safety switch test and adjustment

    hey all, So finally got the transmission in and all the broken things fixed. Now she won’t crank. I got it to start by jumping the starter and she started up instantly...but she won’t crank with the key. I put a new neutral safety switch in so I assume that is either bad or out of adjustment...
  9. S

    Oil dipstick tube broken at block

    hey all, Dipstick tube broke off right where it goes into the block and I cannot find a way to extract it. I’ve tried driving a screw into the hole and then prying the screw out...with large pry bars...and it won’t budge. It even bent the crap out of the thick screw I used. I’ve also tried with...
  10. S

    Transfercase gasket

    hey all, So In my transmission swap journey I am finally at the point of reinstalling the transfer case. I see that there is a paper gasket on the back of the transmission where the transfer case mounts. The gasket on my transmission is there but a bit torn up. Is it ok to use it anyways...can...
  11. S

    Broken exhaust manifold flange studs

    hey all. Not sure if this is the right place for this... Anyhow, as some may know, last week i replaced the transmission in my 03’ ‘hoe z71 in my driveway. Long story short, the exhaust has been a nightmare: the studs from the year-pipe to muffler snapped - 3 of the 6 studs from the exhaust...
  12. S

    Transmission won’t separate from engine block

    hey all, Trying to remove transmission from an 03 Tahoe 5.3 but I cannot get it to separate from the engine block. All of the transmission bolts are out ( even the hard to reach top ones) and the torque converter bolts are out as well. I have loosely reinstalled 2 of the transmission bolts...
  13. S

    4x4 - awd transmission interchange

    Hey all, Blew up the tranny in the 03' hoe and looking to get her back on the road cheaply. Have been offered the "4l60e" from a 2002 Yukon AWD. Will that transmission work with the transfer case from my 4x4 tahoe?
  14. S

    4l60e slipping 3rd

    Hey all, so after a tranny fluid leak from the from mount tranny cooler I’ve now got no 3rd gear. When it tries to go into 3rd then engine just revs but nothing happens. Sounds like the clutches have burned out. I cannot find an affordable transmission locally and don’t want to pay for a...
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    Replacing transmission cooler

    Hey all, so I have an 03 Tahoe z71 with the from mounted transmission cooler. The line that goes to the cooler from the radiator was leaking at the fitting to the cooler. When I removed the line the cooler broke...so I need a new cooler. long story short, there are no oem or aftermarket...
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    Runs like crap after plug change

    THey all, 03 'hoe 5.3 flex... Decided to do some routine maintenance on the beast - plugs, wires, air filter - and afterwards the engine is running like crap, most notably at idle. On the highway the truck seems to have power and is smooth...at idle the engine runs slightly lumpy and...
  17. S

    No instrument lighting but other dashboard lights work

    Hey all, so I’ve long had an issue with the instrument cluster lights where some areas would we darker than others...and if I tapped on the cluster the sim lights would often brighten. I’ve not driven the truck in a year as I was out of the country, and now I have no instrument lights at all...
  18. S

    Power seat recline motor drive shaft/cable

    Hey all, so my son was playing with the power seats - reclining the driver seat back and for - and seems to have broke the seat in the process. I found the motor would spin but seat wouldn’t move. I removed the seat and found that the drive cable which goes from the recline-motor to the recline...
  19. S

    Memory seat module bad?

    Hey all, So now that's i have 'fixed' the recline issue on the driver seat I want to address another problem with the seat...erratic function of the seats forward and backward function. Here is what is happening. The seat will work fine for a period of time then suddenly will stop working all...
  20. S

    Driver seat recline stuck

    Hello all, Yesterday my son jumped in the driver seat and started playing with buttons and switches and when I went to drive I found the driver seat to be reclined almost fully. When I tried to move it back to normal I could hear the motor running but the seat does not move; the motor runs for...
  21. S

    Ac low side pressure

    hey all, So after returning from overseas and preparing the 2003 Hoe for a long road trip I found the AC not functioning. I added 3 cans of r134a which got the condenser running on its own and the truck cooling...but it is not cold. With recirc on the lowest temp I saw was 50f at the vent...
  22. S

    inner wheel well liner plastic rivets

    Hello all, Not sure if this is the place for this but not sure where else it would go...so I recently replaced all the brake lines in my 03' hoe. In the process I lost/broke all of the plastic rivet/push clips things that hold the inner wheel well liner on. I've tried to find replacements for...
  23. S

    Front parking brake cable replacement

    Hey all, I have an 03 Tahoe Z71 with a broken front parking brake cable but I cannot find a writeup or video on how to tackle this. The cable has to attach to the parking brake pedal assembly but I cannot see a way to disconnect the cable from the pedal assembly with it still in the truck. I...

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