All Topics Thu, 12 Mar 2026 07:09:24 +0000 Thu, 12 Mar 2026 07:09:24 +0000 TowRig.com - Diesel truck news & tech forum https://towrig.com/diesel/gm-diesel-6-5.24/ Sat, 19 Nov 2016 04:02:44 +0000 https://towrig.com/threads/6-5l-opinions.6073/ https://towrig.com/threads/6-5l-opinions.6073/ invalid@example.com (99ncxj) 99ncxj
6.5L opinions]]> 9 Thu, 21 Apr 2011 05:08:30 +0000 https://towrig.com/threads/fuse-problem.5980/ https://towrig.com/threads/fuse-problem.5980/ invalid@example.com (ERP) ERP I hate electrical problems.
The trucks a 92]]> 1 Sun, 03 Apr 2011 21:13:37 +0000 https://towrig.com/threads/gm-seat-swap.6342/ https://towrig.com/threads/gm-seat-swap.6342/ invalid@example.com (victoryanthems) victoryanthems Sat, 18 Sep 2010 12:10:46 +0000 https://towrig.com/threads/6-5td-vs-6-0-gas.5022/ https://towrig.com/threads/6-5td-vs-6-0-gas.5022/ invalid@example.com (jepj2000) jepj2000
I'm wanting something that gets better MPGs than my 6.0 but can't afford a big fancy new Duramax.

I would get either a 2500 Suburban or 2500 truck, '96 and newer, is there a year or years better than others?

Also what would be the top 5 mods within a $3K budget you would do to your 6.5TD to help with towing and MPGs?

If there is another...

6.5TD vs. 6.0 Gas]]> 10 Sat, 19 Dec 2009 02:06:58 +0000 https://towrig.com/threads/bully-dog-exhaust-users.6113/ https://towrig.com/threads/bully-dog-exhaust-users.6113/ invalid@example.com (SlowBoat) SlowBoat
I bought this truck from the original owner and it is has been maintained well, but never modified. All over the road miles cross country with a receiver hitch towed trailer.

Within the last 6 months, its had front suspension rebuilt, new...

Bully Dog exhaust users?]]> Thu, 03 Dec 2009 19:22:57 +0000 https://towrig.com/threads/another-6-5-question.6075/ https://towrig.com/threads/another-6-5-question.6075/ invalid@example.com (99ncxj) 99ncxj 4 Thu, 19 Feb 2009 19:35:56 +0000 https://towrig.com/threads/98-6-5td-burb.5577/ https://towrig.com/threads/98-6-5td-burb.5577/ invalid@example.com (Mighty Mouse) Mighty Mouse 4 Sun, 25 Jan 2009 00:24:04 +0000 https://towrig.com/threads/for-sale-97-k2500-6-5.5718/ https://towrig.com/threads/for-sale-97-k2500-6-5.5718/ invalid@example.com (Awake16) Awake16 Up for sale is my 1997 K2500 Series 4x4 pick up. The truck has the Silverado Package which includes power everything. Truck is extremely clean. With NO rust or rot on the whole thing.

This vehicle has many new parts. and runs extremely well.

The truck had the injection pump replaced at 92,000 miles as part of a warranty deal with General Motors.

The truck has recently had the following items replaced:

- Heath PMD and Heat Sink
- Heath...

For Sale 97 K2500 6.5]]> 1 Fri, 14 Mar 2008 21:12:04 +0000 https://towrig.com/threads/bd-power-valley-fuel-injection.5242/ https://towrig.com/threads/bd-power-valley-fuel-injection.5242/ invalid@example.com (Dave@BD-Power) Dave@BD-Power

Let me know if you ever need a pump, injectors or turbo rebuild guys!

Dave]]> Tue, 11 Mar 2008 22:22:29 +0000 https://towrig.com/threads/bd-reflash.2051/ https://towrig.com/threads/bd-reflash.2051/ invalid@example.com (1999GMC) 1999GMC 5 Tue, 11 Mar 2008 22:18:57 +0000 https://towrig.com/threads/turbo-downpipe.4019/ https://towrig.com/threads/turbo-downpipe.4019/ invalid@example.com (montman) montman 2 Thu, 10 Jan 2008 01:02:04 +0000 https://towrig.com/threads/love-my-six-five.4921/ https://towrig.com/threads/love-my-six-five.4921/ invalid@example.com (ColoradoCowboy) ColoradoCowboy
Love my SIX FIVE!]]> 11 Tue, 25 Dec 2007 05:30:48 +0000 https://towrig.com/threads/empty-mileage.3187/ https://towrig.com/threads/empty-mileage.3187/ invalid@example.com (PhoenixZorn) PhoenixZorn
At an average speed of 65MPH on the highway, running at ~2000RPM, I get about 16.5mpg. I recently replaced the IP, Glow Plugs, Alternator, removed the EGR system, cleaned the intake, and replaced the Turbo Wastegate Solenoid. If my mileage seems low...

Empty Mileage??]]> 10 Thu, 13 Dec 2007 03:24:55 +0000 https://towrig.com/threads/towing-capacity.2779/ https://towrig.com/threads/towing-capacity.2779/ invalid@example.com (munn) munn Thanks in advance.]]> 10 Tue, 11 Dec 2007 16:03:07 +0000 https://towrig.com/threads/love-my-6-5.1583/ https://towrig.com/threads/love-my-6-5.1583/ invalid@example.com (Brisk) Brisk
Here goes:

I love my 6.5. It has been running flawlessly for quite a while now. I had to replace a few items that I would expect too with 120k on the clock (i.e. PMD, Glow plugs, fuel shut off switch, wastegate solonoid) I drive 100+ miles a day for work w/ ~1000lbs in the bed and it loves every minute of it. It is so comfy to drive and will...

Love my 6.5!!]]> 14 Tue, 20 Nov 2007 03:00:22 +0000 https://towrig.com/threads/how-much-power-can-u-get-outa-these-things.4261/ https://towrig.com/threads/how-much-power-can-u-get-outa-these-things.4261/ invalid@example.com (jeremy89chevy) jeremy89chevy 6 Wed, 25 Jul 2007 12:17:46 +0000 https://towrig.com/threads/starting-problems.4237/ https://towrig.com/threads/starting-problems.4237/ invalid@example.com (ERP) ERP Sun, 29 Apr 2007 03:14:27 +0000 https://towrig.com/threads/what-kind-of-transmission.3782/ https://towrig.com/threads/what-kind-of-transmission.3782/ invalid@example.com (duallydriver) duallydriver Thanks]]> 2 Fri, 20 Apr 2007 11:58:15 +0000 https://towrig.com/threads/6-5-injection-pump-replacement.3724/ https://towrig.com/threads/6-5-injection-pump-replacement.3724/ invalid@example.com (Heavydutyharley) Heavydutyharley
I am considering doing this myself, to save money. Someone please advise.

HD]]> 3 Wed, 28 Mar 2007 20:49:10 +0000 https://towrig.com/threads/cooling-issues.3432/ https://towrig.com/threads/cooling-issues.3432/ invalid@example.com (k5-1402) k5-1402
cooling issues]]> 11