01 2500hd tune up and upgrade ideas - The 1947 - Present Chevrolet & GMC Truck Message Board Network

caspear1978 · 06-14-2020, 09:22 PM

Just picked up an 01 2500hd. What are some ideas for a tune up ideas. Plugs, wires, filter. Power and ground wires? Motor has 400k on it. Still runs and drives. Doesnt use oil. Doesnt smoke. What would yall reccomend for tuneup upgrade ideas?

**hatzie** · 06-14-2020, 10:53 PM

AC Delco 41-962 Platinum plugs and Delphi plug wires. Don't use the Iridium plugs in that motor even tho the parts counter guy will try to sell them to you.

The Spark Plug service bulletin from Delco and the plug wire part numbers are in post #27 of my build thread.
http://67-72chevytrucks.com/vboard/s...4&postcount=27

The Dirtymax Diesel air filter fits in the 6.0L airbox. The pleats are deeper.

caspear1978 · 06-17-2020, 03:59 PM

I decided to change the coils on my 6.0. It had orginal round coils on it. I took the square coils off a 5.3 i have sitting in a 99.

Reason for change. I am trying to figure out why iy ideals fine when i first start it. But has a miss when i get to toen. Which is maybe 3 miles from home.

Neighbor suggested a coil going bad. But. Still going it after coil swap and wire swap.

Could a plug be going bad once it warms up? Or could it be an injector?

Slight stump on my end here. Not sure which way to go. I do plan on getting new plugs and wires once i get paid. Just trying to make the truck run a bit better for now.

**70cst** · 06-22-2020, 06:51 AM

As far as tune up ... on y 04 Sierra I wnr acrosss the board with GM. I am not sure if any of the aftermarket items would make any real differece that one could see.

I will be putting on dual exhaust but that is about it.

**hatzie** · 06-22-2020, 01:40 PM

I picked the Delco plugs and Delphi wires because they are OEM. I haven't been disappointed.

What do the misfire counters tell you?

A relative compression test with a scope will tell you a lot about engine mechanical condition.

http://www.youtube.com/watch?v=WKdZsWU2ZmI

Using a scope to view misfires from fueling issues.

http://www.youtube.com/watch?v=NXrd1fYwj1o

**70cst** · 06-22-2020, 09:48 PM

Quote:

Originally Posted by hatzie

I picked the Delco plugs and Delphi wires because they are OEM. I haven't been disappointed.

What do the misfire counters tell you?

A relative compression test with a scope will tell you a lot about engine mechanical condition.
http://www.youtube.com/watch?v=WKdZsWU2ZmI

Using a scope to view misfires from fueling issues.
http://www.youtube.com/watch?v=NXrd1fYwj1o

Interesting info ... Thanks

06-14-2020, 09:22 PM	#1
caspear1978 Registered User Join Date: Sep 2012 Location: HIbbing,MN Posts: 43	01 2500hd tune up and upgrade ideas Just picked up an 01 2500hd. What are some ideas for a tune up ideas. Plugs, wires, filter. Power and ground wires? Motor has 400k on it. Still runs and drives. Doesnt use oil. Doesnt smoke. What would yall reccomend for tuneup upgrade ideas?

06-17-2020, 03:59 PM	#3
caspear1978 Registered User Join Date: Sep 2012 Location: HIbbing,MN Posts: 43	Re: 01 2500hd tune up and upgrade ideas I decided to change the coils on my 6.0. It had orginal round coils on it. I took the square coils off a 5.3 i have sitting in a 99. Reason for change. I am trying to figure out why iy ideals fine when i first start it. But has a miss when i get to toen. Which is maybe 3 miles from home. Neighbor suggested a coil going bad. But. Still going it after coil swap and wire swap. Could a plug be going bad once it warms up? Or could it be an injector? Slight stump on my end here. Not sure which way to go. I do plan on getting new plugs and wires once i get paid. Just trying to make the truck run a bit better for now.

06-22-2020, 06:51 AM	#4
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	Re: 01 2500hd tune up and upgrade ideas As far as tune up ... on y 04 Sierra I wnr acrosss the board with GM. I am not sure if any of the aftermarket items would make any real differece that one could see. I will be putting on dual exhaust but that is about it. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

06-14-2020, 10:53 PM	#2
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: 01 2500hd tune up and upgrade ideas AC Delco 41-962 Platinum plugs and Delphi plug wires. Don't use the Iridium plugs in that motor even tho the parts counter guy will try to sell them to you. The Spark Plug service bulletin from Delco and the plug wire part numbers are in post #27 of my build thread. http://67-72chevytrucks.com/vboard/s...4&postcount=27 The Dirtymax Diesel air filter fits in the 6.0L airbox. The pleats are deeper. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 06-14-2020 at 11:26 PM.



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