2000 GMC Yukon - Answered Questions & Fixed issues

For strangeness like that, you need a good local auto electrician with a pro grade scan tool computer. Sounds like a communication issue with sensors and the BCM.

You will need to take it to a parts store like NAPA and see if they will read the tcm (transmission control module) for codes, if all else fails then take it to a transmission shop and ask if they can scan it for codes and check the functionality of the tow haul button if it is not functioning, it could be just a broken wire from flexing at the base of the shifter.

The lock actuator needs to be replaced .

Your passlock system is failing. If your key has the resistor pellet with the short wire on both sides of the shank, I can provide a bypass procedure. You will need an ohmmeter, some resistors you can get at radio shack, and a soldering iron. I do not recommend trying to repair the system--bypass is much easier. Let me know if you want the bypass procedure...

The first place to start with problems like this to try an reset the computers on the vehicle . Disconnect the battery cables an touch them together for five or ten min. Then if that doesn't work you need to have the vehicle checked out , which means having a factory or equivalent scan tool check for codes in the BCM ! The body control module (BCM) is capable of controlling multiple body functions. Components directly connected to the BCM are controlled by the BCM's outputs. The BCM controls the outputs based on input information that it obtains from the sensors and the switches that are directly connected to it. The BCM can also borrow information from other vehicle systems connected to the Class 2 serial data link. The BCM evaluates this information and controls certain body systems by commanding an output ON or OFF. The BCM is also capable of commanding other vehicle systems to control functions that are not directly wired and/or controlled by the BCM. The BCM accomplishes this task by sending specific messages on the Class 2 serial data link. The vehicle system capable of performing such function will respond to the BCM message. The BCM controls the following functions: ?€¢ Audible Warnings

?€¢ Indicator Warnings

?€¢ Interior Lighting

?€¢ Exterior Lighting.

?€¢ Power Door LOCK/UNLOCK

?€¢ Remote Keyless Entry

?€¢ Passlock Theft Deterrent

?€¢ Content Theft Deterrent

Do not do this; take the car to an auto radio specialist

We don't either. Bring it to someone that can HEAR it and determine WHERE it is coming from.

Did this get replaced recently? Fuel level senders typically work by changing the resistance (and therefore current) depending on the fuel level determined by the position of the float mechanism in the tank. Since the guage you are describing is working exactly opposit to as intended, is it possible that an incorrect sender was installed, or, if there are 2 terminals on the guage, have the wires been switched so that the current is going through the wrong way?

Owner's manual? No manual, try filepeep.com if they have it or manualslib.com Youll probably need it later.

want to know if u have any codes first comon is throttle body if it said power loss on cluster unplug battery and re connect and drive .need toknow the codes thoug

hahaha i have to laugh on this contact your auto parts store. who ever told you this dont know what they are talking about, i have found many so called obsolete parts and yours is only turning 15 ... i have found parts for an 88 with no problems. auto parts store they can find what you are looking for or order it.

It usually means one of the bulbs is burnt out...

I can send you all the info you need, but it's way too much to post here. Send me an email and I can send you screen shots from alldata. [email protected]

Take it back to the trans rebuilder immediately

It means that the transmission oil is overheating and you need to cool the oil by allowing the engine to idle for a period of time . The transmission oil cooler is in the radiator and that means that the engine temperature will also be running hot . Check oil level in transmission and adjust to correct level. Check the load being carried /towed as this makes the transmission torque converter work harder and the speed you are travelling at What ever the reason I suggest that you run the fault codes to check for transmission problems

Your question is unclear and it is not possible to fully understand what you are trying to describe. Please re-state your question, providing greater detail as to what sort of problem you are experiencing.

place a mobile jack under the sump to take the weight of the engine and undo bolts for the mounts from the engine and sub-frame . do one mount at a time to keep the position on the engine constant.

Do it again . you'll find the problem

Check for loose damaged or out of adjustment shift linkage. Check for bent or binding and if vehicle has been driven on paved road in 4WD for a long time the driveline torque can make shifting difficult.

why? whats leaking?from where..