20 Most Recent 2000 GMC Sierra Questions & Answers


did you try the fuel filter

2000 GMC Sierra | Answered on Jan 06, 2019


I have replaced the corroded and burnt front signal socket as I was told that could be part of the problem. Now another person tells me that if I do not have the oem flasher unit this might be the culprit.?????? Rather then listening to people telling you it's this or that , if you can't view a wiring diagram an use a DVOM - digital volt ohm meter an test the circuits an find the problem , your best bet mite be to take your vehicle to a qualified repair shop. There are a lot of training videos on youtube for leaning how to trouble shoot these type problems . This is how professional technicians learned !
Electric Testing Techniques You Need to Know
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

If the fuse blowes you have a direct short to ground on the B+ voltage supply circuit for the right turn signals .
Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine . Under system click on lighting , then under subsystem click on exterior lighting . Click the search button then the last blue link..
When does the fuse blow ? As soon as you turn right signal on ? As soon as you install a new fuse ?
How to test for short to ground ohmmeter vs test light Don't rely on others , learn to test ,not guess .


2000 GMC Sierra | Answered on Feb 23, 2018


This could be many things, but you might have leaky fuel injector(s). Possible weak spark.

2000 GMC Sierra | Answered on Feb 09, 2018


Only one place it can go if you have no leak and that is through the head gasket and into either the exhaust or oil.

2000 GMC Sierra | Answered on Oct 07, 2017


Well stop looking on forums , most of those people don't have a clue ! Looking at a wiring diagram of the starting electrical circuit for your vehicle ,then testing for B+ voltage an good grounds where they should be is how to find and fix the problem , not guessing an listing to other people on forums . Something that fixes there problem was just lucky guess. By you saying it won't crank i take that to mean that when you turn the key to the start position nothing happens ? Is this correct ? A lot of people get that mixed up with the vehicle won't start a run . Do you know what a wiring diagram is ? What a DVOM -digital volt ohmmeter is ? How to use them for testing a electrical circuit .
What size engine does it have ? Is it a 4X4 ? Manual or automatic transmission ?
Free wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter your vehicle info. year , make , model and engine size. Under system click on engine ,then under subsystem click starting Click the search button then the blue link. Look at the wiring diagram , a lot of thing's involved . Ignition switch ,park neutral safety switch if it has a automatic transmission , clutch pedal position switch for manual trans , plus the starter motor relay ,starter motor . This is how professional automotive tech's find and fix electrical problems , it takes year's of training to get good . Plus thing's change all the time .
Electric Testing Techniques You Need to Know

2000 GMC Sierra | Answered on Sep 13, 2017


have the battery load tested for serviceability or drain when left standing
have the fault codes read to find the problem area from the fault codes ead

2000 GMC Sierra | Answered on Jul 15, 2017


I assume the check engine/ service soon light is on. Commonly the MAP sensor is the culprit, but can be TPS, CSS, even a buggy O2 sensor. Only way to be sure? (light or not) is to scan it.

2000 GMC Sierra | Answered on Jul 02, 2017


What with that many miles on it I would check the catalytic converter and muffler to be sure they are not plugged. If one of them get plugged it puts back pressure on the engine and won't allow the fuel to enter the cyl. to start the truck. Have you check the fuel pump pressure and the fuel filter.

2000 GMC Sierra | Answered on May 23, 2017


If you want a quick check of the blend door system,clamp off the heater hoses,as you would if you were changing a heater core and drive as you would.Do not disconnect them,just clamp them.
Also,don't over look air flow through the a/c condenser at the front,any restriction of air flow or a slow fan or only one running of 2 when 2 are needed?

2000 GMC Sierra | Answered on Apr 30, 2017


If it were low fuel pressure misfire , it wouldn't be cylinder specific misfire #2 , 4 it would be P0300 random misfire . I would think fuel injector's too . When hot they could be breaking down electrically , more resistance . If they tested electrically with a lab scope they would know for sure . Misfire from sticking fuel injector no fuel misfire

2000 GMC Sierra | Answered on Mar 26, 2017


Make sure you have good ground not only to the engine but from either battery to body and chassis or engine to body and chassis.

2000 GMC Sierra | Answered on Dec 03, 2016


Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
Best Manuals

2000 GMC Sierra | Answered on Nov 24, 2016


Once you remove the blower motor the fan cage is held to the motor shaft by a spring clip, just remove the clip and blower cage pulls off.

2000 GMC Sierra | Answered on Nov 23, 2016


there is a module for the daytime running lights... usually located on the passenger side firewall inside the engine compartment.... it likely needs to be replaced. if you cannot locate it let me know i'll find more detailed instructions for you

2000 GMC Sierra | Answered on Sep 12, 2016


doesnt have one , the fuel pump is probely out!!!

2000 GMC Sierra | Answered on Sep 01, 2016

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