GMC Yukon XL - Popular Questions, Answers, Tips & Manuals

Which O2 sensors came out of the vehicle an which did you put back in ? Two different types for that vehicle. DTC P0134 or P0154 (w/LR4 and LM7 w/ Delphi HO2S) DTC P0134 or P0154 (w/LR4 and LM7 w/ Denso HO2S) DTC P0134 or P0154 (w/LQ4 w/Denso HO2S)

Question edited for clarity, full 'year maker model'. Question moved to sub category. There are at least two fuses that mention it.

GMC Yukon (2000 - 2001) - fuse box diagram - Auto Genius

https://www.autogenius.info > gmc-yukon-2000-2001-f... Jan 1, 2017 - The underhood fuse/relay center is located in the rear of the engine compartment near the brake fluid reservoir. ... WARNING: Terminal and harness . ..

Lots of help here. You need a good auto-electrician with a pro grade scan tool. There are soooo many modules in that vehicle and I have a vague recollection there is a box of tricks under the seat!. https://www.google.com/search?q=2002+yukon+won%27t+start ..

did you look to see if belt attached or pump failed

The player can't read the disc

You can try out some guide from here reliable-store. com they also provide live chat feature for instant help and it's very useful

Have you looked under the pas seat. Or pull the floor up at the rear where the spare tire should be

Short in the wiring or connector pins . Possible short in AC clutch .

I suggest you get one of those manuals people get nowadays to do it yourself.. My brother used it to repair my car and it's totally repaired now. he got it from. www.reliable-store.com

not sure if you did all these steps but maybe it'll help.... https://northcoastkeyless.com/2003-gmc-yukon-denali-keyless-entry-remote-programming-instructions/

check wiring of speaker... get wiring diagram from www.reliable-store.com

you replaced check the electrics but forgot the obvious bad injector , connections and fuel pressure

Yes to much of this. Compressor is close to the shocks - Start with electrics - Find wiring and check for voltage at the compressor - compressor is small like the little ones you buy for tire pumping - like small - Jumper a temporary wire from battery to compressor does that work? If not just replace the compressor. I've replaced mine twice for corrosion issues. If pump works, look for leaks or leaking shock. You can use a tire pump to check shocks leaking.

Define - It attempts to turn over but won't catch and run ???? When you turn the key to start does the starter engage an spin the engine ? This would be a crank no start condition . If the starter doesn't engage an spin the engine this would be a no crank no start condition . Sorry to ask but i have only been an auto tech for thirty years an have heard a lot of different discriptions for these simple actions . crank no start or no crank no start . Very different diagnostic procedures . So when you turn the key to start , does the starter engage an spin the engine ,but won't start an run ?

Yes input and output sensors

Is there B+ voltage on the heavy gage wire on the back of the alternator ? Possible blown fusible link. Plus the two wires in the connector go to the PCM - engine computer . One is the turn on signal ,the other is charge indicator control . Having the vehicle checked for DTC'S - diagnostic trouble codes should also be done .DTC P1637 The powertrain control module (PCM) uses the generator turn on signal circuit to control the generator. A high side driver within the PCM allows the PCM to turn the generator ON and OFF. When Generator operation is desired, the PCM sends a 10 volt signal to the voltage regulator via the generator turn on signal circuit. This causes the voltage regulator to begin controlling the generator field circuit. Once the Generator is enabled by the PCM, the voltage regulator controls generator output independently of the PCM. Under certain operating conditions, the PCM can turn Off the generator by turning Off the 10 volt signal on the generator turn on signal circuit. The PCM has fault detection circuitry which monitors the state of the generator turn on signal circuit. If the fault detection circuit senses a voltage other than what is expected, this DTC will set. The voltage regulator also contains fault detection circuitry. If the regulator detects a problem, the regulator will ground the generator turn on signal circuit, pulling the voltage low. This also causes the PCM to set the DTC. Your best bet mite be to take it to a qualified repair shop.

Considering all the things you've replaced, It's time to look for a possible bad light switch or bad connection to it.

At www.reliable-store.com get complete guide on whether to repair or not, service it, and how to repair etc, along with wiring diagrams, electrical diagrams, torque specs, error codes, everything.

It sounds like you have a bad connection on the battery. Make sure to clean the connections, make sure they are tight, and make sure the ground cable has a good connection at both ends, battery side and body/frame side. The bad connection is the only answer when the battery is fully charged and you turn the key and it all goes out. If you can turn on your headlights and press the brake at the same time, and they work, then it may be something else, but I would be amazed if they do work given your description of your problem.

So, make sure the battery is charged and clean and tighten all your connections. Test battery connection by putting it under a load with all the lights, head, and brake at the same time. If it goes off then, redo cables again.

Good luck.

2 wheel drive or 4 X 4 ? Automatic or manual climate control Do you know what DTC'S - diagnostic trouble code's are ? DTC B1375 The ignition 3 voltage circuit is a discrete input to the HVAC control module. The HVAC control modules uses the input to determine that the ignition switch is in the RUN position. When the ignition switch is in the RUN position, ignition voltage is applied to the input. Rather then guessing as to what the problem , not being able to diagnose properly , your best bet mite be to have a qualified repair shop check it out . Would need to hook up a professional or factory scan tool to check code's ,see if the climate control module will communicate with the tool . HVAC Control Module The HVAC control module is a class 2 device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. The battery positive voltage circuit provides power that the control module uses for keep alive memory (KAM). If the battery positive voltage circuit loses power, all HVAC DTCs and settings will be erased from KAM. The body control module (BCM), which is the vehicle mode master, provides a device on signal.