20 Most Recent 2002 GMC Sierra 2500HD Questions & Answers

1 Answer

Fan only works on high 02 gmc hd 2500

There is a resistor attached to the blower box. Replace the blower resistor and this should solve your problem

2002 GMC Sierra... | Answered on Jun 26, 2019

1 Answer

Why do i keep breaking the ac belt on my 2002 2500 hd?

Sounds like your a/c clutch is locking up and wearing your belt in half.

2002 GMC Sierra... | Answered on Jan 17, 2018

1 Answer

Cracked rear axle tube.

Ouch. It sounds like truck was overloaded with too much weight by previous owner.
Time to go to scrap yard and pick up a used rear axle assembly. Take it apart and check it for cracks before you reinstall it.

2002 GMC Sierra... | Answered on Sep 22, 2017

1 Answer

Noisy steering pump on 2002 gmc sierra 2500 pickup

Did you bleed the air out?

2002 GMC Sierra... | Answered on Aug 03, 2017

1 Answer

I am having an electrical problem with my 2002 GMC HD2500 Dura Max diesel.....did not crank at all this morning. Both batteries were 4+ years old. Figuring it was the batteries, I just went ahead and

Starter relay , ignition switch , park neutral psition switch if automatic trans , clutch start switch if manual trans. , battery cables ,connections . If you don't know how to do automotive electrical circuit testing , your best bet , take it to a qualified repair . How to voltage drop test starter motor circuit
Starter Voltage Drop
Free wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter the vehicle info. year ,make , model and engine size . Under system click on engine ,then under subsystem click on starting . Click the search button ,then the blue link . Look an see what all is involved in the starting system . Use a volt meter an test to see where B+ voltage is an where it isn't while someone turns the key to start . You can rule out the load (starter ) side by jumping pins 30 & 87 where the relay plugs into . Watch this video on relays .

VEHICLE RELAYS Operation Diagnosis

2002 GMC Sierra... | Answered on Jul 25, 2017

1 Answer

Have a 02 gmc duramax engine diesel wouldnt start one morning my neighbor shot starting fluid into intake the engine revved up to 3500 r.p.m. for a few seconds but continued running it ran for about

6 6 Duramax Crank no start GM Chevy GMC Tech Tips Angry mechanic
Duramax LLY FICM Injector Trouble Misfire Part 1

suggest you look at a bunch of these youtube videos .

2002 GMC Sierra... | Answered on May 07, 2017

1 Answer

Remote lock and unlock stopped working.Changed bat. no luck. tried to reset no luck.I have two remotes and niether one works. They have worked fine up till now. Can u help. Thanks.

There is an issue with the battery connector coming un-soldered at the circuit board inside of the remote.

2002 GMC Sierra... | Answered on Feb 11, 2016

2 Answers

How to work remote starter option... sequence on key fob

You have to hit the lock button and then hold the start button.

2002 GMC Sierra... | Answered on Jan 12, 2016

1 Answer

How do i change a serpentine belt on a 2002 gmc 6 litre truck

easiest way to give you the advice is to follow this link to a u-tube video
How To Install Replace Engine Serpentine Belt Chevy Express GMC Savana 6 0L

2002 GMC Sierra... | Answered on Jan 26, 2015

1 Answer

How do i change a serpentine belt

release the tension on the idler pulley. Many YouTube videos.
Most cars is a easy and inexpensive R&R

2002 GMC Sierra... | Answered on Jan 25, 2015

0 Answers

Looking for solenoid wiring diagram fisher plow mmi on 2002 gmc

2002 GMC Sierra... | Posted on Jan 13, 2015 | Be the first to answer

1 Answer

My 2002 GMC 2500hd with an 8.1 eng has two history codes p0101 and p0700. How do I fix it?

if it's in the transmission other than ck'ing to see if you have proper level and quality fluid level in trans theres not much a homeowner can do your gonna need to find a good trans shop
1st try getting a fluid flush and fill this is a lower cost fix that sometimes works and you don't need to remove trans to do it

2002 GMC Sierra... | Answered on Sep 16, 2014

2 Answers

Clunk when coming to a stop

That clunking noise you get it whilst you are braking or just as you are coming. If it is whilst on breaking,check your rear brakes. if is whilst coming check for any suspension shocks,bushes.

2002 GMC Sierra... | Answered on Aug 30, 2014

1 Answer

02 gmc allison tran. wont go into tow-haul mode

THERE HAVE BEEN ALOT OF PLOBLEMS WITH THE SHIFTER HANDLE/SWITCH. THE BEST WAY TO VERIFY CONCERN IS USE A DIAG. SCANNER & VIEW TRANSMISSION DATA DISPLAY WHILE ENGINE RUNNING. THE SWITCH IN THE SHIFTER IS FAULTY. IF YOU SEE NO INPUT CHANGE WHILE DEPRESSING SWITCH THIS IS YOUR CONCERN.

2002 GMC Sierra... | Answered on Jul 04, 2014

1 Answer

Volt meter not working gauge code

Bad diode on printed circuit board common problem

2002 GMC Sierra... | Answered on Jun 06, 2014

1 Answer

NO CRANK, SECURITY LGHT, VOLT METER NOT WORKING

possible crank sensor and or crank fuse and or dead battery in remote or in car.

2002 GMC Sierra... | Answered on May 24, 2014

1 Answer

I am having an electrical problem with my 2002 GMC HD2500 Dura Max diesel.....did not crank at all this morning. Both batteries were 4+ years old. Figuring it was the batteries, I just went ahead and

sounds like starter motor/solenoid problem, try hitting the starter motor with a hammer , a couple of sharp hits may loosen off the bendix if this is the problem, if starts replace the starter motor

2002 GMC Sierra... | Answered on May 05, 2014

1 Answer

Sierra neutral safety

Check fuses I believe there is a main starter relay under the hood in the fuse box. Will it crank in neutral.

2002 GMC Sierra... | Answered on Apr 13, 2014

0 Answers

02 duramax no start when warm

2002 GMC Sierra... | Posted on Apr 11, 2014 | Be the first to answer

1 Answer

I have a 2002 2500hd and i have power to radio and lights until i got to start it then i loose all power

Have you checked the Solenoid? That would be why the starter would keep engaging, but not start. You might also want to check the Voltage Regulator, and the sensors. Here is a page of images that might help you with identification.

2002 GMC Sierra 2500HD solenoid Google Search

Thank you for contacting Fixya.
Does this help? Let us know.

Ponder/Meditate/Pray for Peace.

Mary Oliveau { hugs }

2002 GMC Sierra... | Answered on Feb 25, 2014

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20 Most Recent 2002 GMC Sierra 2500HD Questions & Answers

Fan only works on high 02 gmc hd 2500

Why do i keep breaking the ac belt on my 2002 2500 hd?

Cracked rear axle tube.

Noisy steering pump on 2002 gmc sierra 2500 pickup

I am having an electrical problem with my 2002 GMC HD2500 Dura Max diesel.....did not crank at all this morning. Both batteries were 4+ years old. Figuring it was the batteries, I just went ahead and

Have a 02 gmc duramax engine diesel wouldnt start one morning my neighbor shot starting fluid into intake the engine revved up to 3500 r.p.m. for a few seconds but continued running it ran for about

Remote lock and unlock stopped working.Changed bat. no luck. tried to reset no luck.I have two remotes and niether one works. They have worked fine up till now. Can u help. Thanks.

How to work remote starter option... sequence on key fob

How do i change a serpentine belt on a 2002 gmc 6 litre truck

How do i change a serpentine belt

Looking for solenoid wiring diagram fisher plow mmi on 2002 gmc

My 2002 GMC 2500hd with an 8.1 eng has two history codes p0101 and p0700. How do I fix it?

Clunk when coming to a stop

02 gmc allison tran. wont go into tow-haul mode

Volt meter not working gauge code

NO CRANK, SECURITY LGHT, VOLT METER NOT WORKING

I am having an electrical problem with my 2002 GMC HD2500 Dura Max diesel.....did not crank at all this morning. Both batteries were 4+ years old. Figuring it was the batteries, I just went ahead and

Sierra neutral safety

02 duramax no start when warm

I have a 2002 2500hd and i have power to radio and lights until i got to start it then i loose all power

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fan only works high 02 gmc hd 2500