After the MIL is turned off or the battery was disconnected for some time, all monitors are set to incomplete. However with several short trips with engine getting at least to hot enough for thermostat to open, (I believe 8 is the magic number of trips) most monitors are set, you may be able to pass the test with only one incomplete only.
Modern automotive systems are too complex to be guessing. For the money you spent on parts that likely didn't need replaced, you could have hired a competent mobile technician for a proper diagnosis.
The first step of the diagnosis is reading OBD2 codes for direction. But codes must be interpreted and further testing executed to make a diagnosis else it's guessing which typically causes more problems than it solves.
If you can read codes you still need a fundamental understanding of the systems and basic electrical troubleshooting skills to complete the diagnosis.
Whether your an expert GMC Yukon car alarm installer, GMC Yukon ... GMC Yukon, a 2003 GMC Yukon car alarm wiring diagram can save yourself a lot of time. .... Alex, double check ALL your fuses and make sure ALL your fuses are good.
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https://www.youtube.com/watch?v=EKbjYlK4g0E
May 13, 2009 - Uploaded by ehowauto
In order to disable a car alarm, an individual will have to locate the horn that was put in and disconnect it, or ...
GMC out alarm fuse Questions & Answers - Fixya
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If you have an alarm installed remove the in line fuse from the alarm and see if that ...Multiple issues with my 2003 GMC Yukon XL and hope someone can offer .
If fuse was bad it would not start at all, definitely not the fuse, running for a while usually means that something gets hot, and thermal switch kills it.
Check the fuel cap!! If the vacuum relief is not working it can impede the fuel flow and cause the engine to shut down or not restart after a stop. Waiting usually gives things a chance to stabalize and the engine will restsrt. When this happens again try loosening the cap and see if the engine will restart.....If it restarts immediately, REPLACE the fuel cap..Do Not leave it loose because this will cause other problems. If it is not the fuel cap the problem may be the filter, the fuel pump, or aome other fuel system malfunction.
CarGurusApr 7, 2013 - I need to find out what transmission is in a 1999 gmc sierra 1500 pick up 4x4 extended cab. ... Good luck. if the transmission is bad and you KNOW that for a fact, just go ahead and pull it ... My trans went out yesterday and I found one and wantto make sure it fits before I buy it. ... Used GMC Yukon Denali".
CarGurusAug 15, 2014 - Is the transmission in a 1999 gmc yukon and a 2000 Yukon Denali the same. ... Does anyone know where I can get a fairly cheap used motor from in or ...Need a good fairly cheap motor for my 99 Gmc Yukon Denali 5.7L V8.
There are 4 things that could be the cause, the switch, the module, the encoder motor on the transfer case or a problem with the Antilock Brake System [ this is how the auto 4wd system gets it's operational infomation ]. The only realistic way to pinpoint the problem is to scan the 4wd system with a good scanner.
Before replacing anything you people need to go to school and learn how to test .
starts up but dies out . Is security light lit on the instrument cluster ? anti-theft system . will disable injectors if there is a problem .
Could my fuel pump be bad ????? Rather then guessing , i suggest you test fuel pressure to know for sure . Videos on youtube showing how . You will need to buy a fuel pressure testing tool . (55-62 psi) VIN: (V, T,U)
