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  1. Z

    2003 Vs 2007

    I have a 2003 Yukon SLT 4wd 5.3l that I can't inspected, it won't get ready for ecu inspection even though dash light isn't on. I've given up trying to put miles on it for the ecu to be ready. I was thinking of getting a salvage Yukon at auction and switch bodies since my body is in good...
  2. Z

    2003 SLT low voltage sensor 1 bank 1 - low voltage sensor 1 bank 2 ?

    I've been having issues for over 4 years with passing an emission test. I just replaced my cats with an aftermarket Y pipe with cats. I had 2 exhaust leaks from some blocked off auxiliary ports on my manifolds ( bad gaskets) fixed. So after installing the Y pipe I took it out for a 65 mile run...
  3. Z

    2003 Yukon SLT Power steering pressure

    I had to purchase a new power steering cooler. It came with just barbed hose connections. the original came with one barbed and the other has a what looks like a High pressure hose connected directly to cooler. Is it high pressure from the cooler to the rack? The new cooler came with hose...
  4. Z

    2003 Yukon SLT still not ready for emission test.

    I now have 619 miles on since I fixed the coding issue. No codes have come up. I hooked up my OBDWIX software and I've posted the two screens. the numbers for the system ready have not changed from 200 miles. do I just keep taking it out for runs? One question, I live in NH and the weather is...
  5. Z

    2003 Yukon SLT 5.3L Engine not Ready for emission test help

    I finally got the codes gone. I drove it 200 miles after the last time I cleared codes. I went for the inspection and the State computer said the system was not ready for emission test. I drove it again this morning and now have 315 miles. I found out my OBDWIZ computer software did this check...
  6. Z

    2003 Yukon SLT scanner live status problems

    I've had a coding issue for a few years. went away once a while back had done none and now it's back. Codes P074 and 071 both banks lean. The truck runs good, gas mileage ( not from on board) going 75-80 mph 15.7mpg. I plugged in my scanner and this is what I have. MIL status Off ? temp was...
  7. Z

    2003 Yukon SLT still coding

    I cancelled post found my answer
  8. Z

    Battery drain

    I have a 2003 GMC Yukon SLT, fort the past 3 years I've had a battery drain. If left for 3-4 days without use it wouldn't start. A few weeks ago I was talking to my friend who's good with electrical issues and asked him if he thought it could be the starter. He said he didn't think so because...
  9. Z

    2003 Yukon SLT still coding

    I've had a coding issue for 3 years now. 1074 - lean. back in 2017 it took 5000 miles to finally get a sticker after multiple tries. When it passed the guy said it's good but the coding will come back. Last year I never did get a sticker and just drove it hoping I wouldn't get stopped. About 6...
  10. Z

    P0174 code trim issues

    I have a 2003 Yukon SLT 4 x 4 SLT 5.3L it's been coding for a long time and now I need an inspection. The lights been on and it's failed emissions. I have installed 4 new 02 sensors and it's coding quicker now after I clear with scanner than before. It's bank 2 that's the problem according to...
  11. Z

    2003 Yukon SLT 4 Wheel Drive Evap Issue

    I have a 2003 Yukon SLT 5.3L 4 wheel drive. I've gotten a evap code on my scanner and it specified large leak. I've replace the canister a while back. I got under the truck and checked all the connections from the filler to just before gas tank. it's difficult to check there without dropping the...
  12. Z

    2003 Yukon SLT 4 Wheel Drive Code Issues

    Hi Guys, I have a 2003 Yukon SLT 4 wheel drive with 174,000 miles. Truck runs good and good mileage. For over 4 years it has coding issues and keeps it from passing the yearly inspection. Over the last 4 years I replaced the Mass Air sensor, knock sensors, Map sensor, wires, fuel injectors...
  13. Z

    2003 Yukon SLT coding Issues Need Help Bad

    Back in November I brought my 2003 Yukon SLT 5.3L non flex fuel for inspection. It passed the safety but it had a code. Knock sensors both 1 and 2. I replaced and the code went away. After that it coded P1001 my MAF sensor, replaced 5 times and finally got rid of that code. During the MAF issues...
  14. Z

    Need Help with Codes Really bad

    Back in November I brought my 2003 Yukon SLT 5.3L non flex fuel for inspection. It passed the safety but it had a code. Knock sensors both 1 and 2. I replaced and the code went away. After that it coded P1001 my MAF sensor, replaced 5 times and finally got rid of that code. During the MAF...
  15. Z

    2003 Yukon SLT 5.3L Codes help

    about a month ago I put my Yukon back on the road after a 1.5 year rest. I had to have a rebuilt Trans put in. I had a code for the knock sensors and replaced and that went out. As soon as that went out I got a P 1010 code for the MAF, I tried cleaning with maf sensor cleaning but nothing...
  16. Z

    2003 GMC Yukon 4x4 5.3L SLT Transmission

    I have a 2003 Yukon 4x4 SLT with the 5.3L I have a change to get a 2007 4L60E 7KCD 89037515 does anyone know if this will fit? I thought from 2000 up the 4L60E were the same? If not is there any way of making it work. I don't have mine out yet so I'm not sure about the numbers. Thanks

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