20 Most Recent 2000 GMC Sierra - Page 6 Questions & Answers

What engine is this? If the crank reluctor wheel moves independently of the crankshaft, you've got some internal engine problems. The reluctor wheel is a press fit to the crankshaft and should only move when the crankshaft does.

Could be bad circuit boards

There is a small printed circuit board behind the 4 wheel drive button cluster in the dash. Sometimes that board will crack and brake one of the foil conductors. When this happens you get the service 4 wheel drive code. If you remove that circuit board and inspect closely you might be able to find the crack and clean it off and solder it back together to get rid of the code. Make sure before you start you disconnect the battery cable to avoid other damage.

My daughter had the same problem with her 05 Trailblazer . The gas for her air was low . Topped it up and truck ran great .

Lean banks 1 & 2. Most likely a vacuum leak, but could be a dirty or bad MAF sensor, clogged injector(s), bad O2s(although I doubt 2 go bad at the same time), etc. Those are always fun to diagnose. I would focus on the vacuum hoses and try cleaning the MAF elements with CRC MAF cleaner or electrical contact cleaner.

They didn't have a fuel pressure sensor in 2000.... are you referring to the fuel tank pressure sensor? That sensor measures the vacuum/pressure in the fuel tank and is related to evaporative emission control. That sensor is externally located directly on top of the fuel pump on top of the fuel tank. It has a 3-wire connector plugged into it.

could be an exhaust leak

find the relay for the abs motor, disconet the raley if motor is off replace the relay if on check for code on the abs system.

what is your question.

I am assuming that you have a hydraulic clutch. You may have a fluid leak in the clutch system. Leaks often develop at either the master cylinder end at your foot, or the slave cylinder end at the gearbox. Once any piston seals have been replaced or master/slave cylinders have been replaced then the system will need to be bled and this should then rectify the issue.

Some of those GM trucks have a problem with the stepper motor on the instrument cluster sticking. Its pretty simple to change them- a bit touchy tho. order them on amazon for about 3 bucks or take it to a mechanic and he'll put a new cluster in for 150-350 bucks. I just replaced the coolant gauge motor on my 04 Yukon. eureka its fixed.

It all depends on where the hissing comes from. But my understanding is that mass air flows do not make a hissing. They are a sensor so there are not any moving parts. And as for the transmission, Maybe there is a vacuum line you left off or something of that nature. I don't know your truck specifically but i know vacuum lines make a pretty good hiss and changing the transmission is a pretty large job and very easy to leave something like that somewhere in the engine because they are small.hope this helps

I would go with the transfer caseThe trans may have issues but notlock up

replace fuel filter, if that doesn't work ck for fuel pump problem

thats interesting,tell me more. are u saying the coolness fades when raining or does even the compressor light go off when wet?

You need to test the fuel pressure with an accurate gauge. This engine is very pressure sensitive. It has trouble even running if the pressure drops below 55PSI.

on shifter knob the switch is at the end. two wire are connect to it and they are cut inside column steeringi hope it help

Hello: When the condition occurs pull over, do no turn engine off, open hood on the passenger side there is a line that comes out of the accumulator, if it is white(frosted up) the you have a low pressure switch that is not working properly. This switch cuts the compressor off to keep the system from freezing up. If you have this condition you can fix it yourself. Get a new switch and o ring, put a small amount of oil on the o ring. Unscrew the old switch, screw the new one in (electrical connector disconnected before removing old switch) connect the connector. You will not loose the freon as there is a schrader valve that will keep the freon in the system.