Question about 2002 GMC Sierra 2500HD

1 Answer

Can i use syn fluid in tran - 2002 GMC Sierra 2500HD

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • GMC Master
  • 81,424 Answers

Yes u can, just use the new DEXRON VI (GM recommendes it for all there AT transmissions now), it is avail as a full synthtic or a blended fluid, it greatly improves trans perf and extendes the life of the trans.

Posted on Jun 16, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How many type of gear oil must I put in my MK4 golf, d transmission is automatic

you have automatic trans ?then any good quality trans fluid will work you can use systhic also ,you have engine and filter for the motor 10-30 ,5-30 or syn works well ,rear end oil or syn.and if its diesel engine ,also ask you volkswagon dealer and go by what they say to install there is also power steering oil for that and in your owners book it will tell you what to use and brake fluid also in the owners book

Apr 19, 2016 | Cars & Trucks

1 Answer

98 cherokee 2wd suspension upgrade

I am told that if all is in good shape inside diff, a change to syn. lube can increase fuel mileage and extend parts life. I have not personally done this.

Jul 31, 2015 | Cars & Trucks

1 Answer

93 jeep yj 2.5 lift new u joints 31 s drive line vibration is this normal for such a small lift ?

Usually at some point in time

You have to check & correct drive shaft angles,
the best you can, with shims on the rear spring perches
& possibly lower the trans tail housing mount

You have to check the drive shaft for being straight
& MUST have it balanced

What about Shocks?

Did you add ones with the extra travel as the lift?

Did you try different tire pressures?

Have you narrowed down the exact speed & road
conditions it starts to vibrate?

Are the rear wheel bearings on their way out?

How about installing new motor & trans mounts?

Change all diff fluids & go to full-syn

Install or rotate the tires to different spots

Keep notes & make one change at a time

Is the Suspension Bound up any where & not free
to rotate or move since lifted?

Aug 12, 2014 | Cars & Trucks

2 Answers

What type of fluid do i use in my transfer case

If you have the manual transfer case (lever actuated), use DEXRON-III Automatic Transmission Fluid. If you have an automatic transfer case (push button actuated), you should use the fluid that GM recommends. Some owners' manuals may say to use Automatic Transfer Case Fluid (GM Part No. 12378396), which is a reddish colored fluid. GM has a new Auto Trak II Transfer Case Fluid (GM Part No. 12378508), which has a bluish color to it. The newer fluid has better friction modifiers. While your doing the job, it's a good idea to change the drain and fill plugs (GM Part No. 15032997) out too.

Nov 19, 2012 | 1998 Chevrolet K1500

1 Answer

Difficult to get into reverse saab 9.5se estate

This sometimes happens with Manual Trans; there's suppose to be a fix an all metal linkage replacement for the plastic one. You can also try changing out the trans fluid with the Saab Syn MTF.

Sep 04, 2010 | 1999 Saab 9-5

1 Answer

Transmission chemical break down

new BMWs recommends never change it. some high end cars are this way. Just like BMW oil service is 15,000 with syn.

Unless your stressing the trans by alot of dusty roads or towing I would say if you have dipstick look at the condition. It should NOT be brownish, Pinkish red is good.

But if it were my I wouldn't go much past 30,000 or whatever manufactures intervals are. Ask your mechanic on your next oil service.

Jun 19, 2010 | 2001 Kia Optima

1 Answer

What weight transmission fluid for a 3.5 liter V6 automatic

There is no weight for tranny fluid . GM car use DEXTRON lll or Ful Syn. Ask at counter.

Jan 20, 2010 | 2005 Chevrolet Malibu Maxx

1 Answer

Diff. Fluids for front & rear?

75w140 syn in both axles and 1 small bottle of additive per 1 liter of gear oil for rear axle

Aug 09, 2009 | 2005 Dodge Ram 3500

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

39 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

81424 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22359 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides