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  1. J

    1989 radio suggestions

    I got everything from Crutchfield including wiring, instructions and etc.
  2. J

    RPO code and others

    Thanks a bunch. I was aware of rpo codes and was aware of the available manuals; I did not know the two were combined. Downloading today.
  3. J

    1988 U-Joints?

    Not yet, although has not been too long since brakes were gone through back there. It's on my list. This truck recently became my everyday driver again, so lots to catch up on. I appreciate your encouragement and apologies for disappointing you. You and my father would have lots to agree upon...
  4. J

    1988 U-Joints?

    Agreed. I purchased the gear oil and gasket intending to inspect the diff completely and change the gear oil, but decided to check U-joints again and was able to reproduce the offending noise. With some confidence, I suspect Saturday was the first time the diff fluid was checked in 20 years...
  5. J

    RPO code and others

    I reviewed the sticker in my 1988 K1500 glove box and compared to an online list to decipher the codes. First, for some of the codes, multiple interpretations were provided. Is this because the list I was using was not model year specific? Also there seemed to be duplicate codes. For example...
  6. J

    1988 U-Joints?

    Resolved (it seems). In the OP, I did not also mention a jingle at low speeds; it seemed to worsen lately, so I looked back into the driveline. My initial mistake was thinking a tiny bit of play in the universals was OK; upon further reading I learned a little play is not acceptable. Changed...
  7. J

    1988 U-Joints?

    For some time, I have had a concern about a sound (whine?) that comes and goes at highway speeds depending upon whether torque is applied to the drivetrain. When throttle is reduced to allow "coasting," the noise immediately stops. Possibly related, when slowly going back and forward to hook...
  8. J

    Spark Plug wire off 1988

    Sorry for the delay, but after closer inspection, no visible issues with the plug or with the connector inside the wire boot. I took pictures but they were unremarkable so I did not go to the trouble to post them. I did adjust the wire in the guide/holder to give it a bit more slack. No issues...
  9. J

    Spark Plug wire off 1988

    First post, Hey there! My 1988 K1500 has been our extra vehicle since I got it as 2nd owner 20 years ago and replaced the lower end with a crate block and a crate transmission. Short history: regular maintenance, tune ups. fairly reliable. Trouble earlier this year required new TBI. Later...
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