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Old 11-10-2018, 03:03 PM   #3
hatzie
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Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,912
Re: Hatzies 2005 2500HD

$650.00 Line-X from Truck Trends in Belmont, NH and a $200 Truxedo Roll Up Tonneau Cover from Evilbay.
The inside of the 13 year old bed was mint with the exception of some finish coat rub-thru to primer on top of the wheel arches and headache board. ZERO RUST!!!! I want to keep it that way.

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I replaced the 17x7.5" Hummer H2 wheels with 285/75R17 tires on N89 17x7 wheels. The Michelin LT265 tires do not have a warranty if they're mounted on the 16" x 6.5" wide PY0 wheels.
This style 8 lug N89 wheels were actually an option on the 2005 Silverado but mine didn't leave the factory with them.
The tires on the N89 wheels are Michelin Defender LT265/70R17. The wheels are around $160 each on evilbay. Probably Asian or Central/South America manufacture but all four spin true with no tire and the fit and finish is good enough for my truck.
I've mounted 265/75R16 tires on PY0 wheels and run them on my 1976 & 2000 3/4 ton trucks with no issues but Michelin will not warranty them on "narrow" wheels anymore.
All of them are the 8 bolt 6.5" circle pattern GM ran from the 60s through 2010 or so.
I did update the ABS controller tire size using my Tech 2. I picked the factory available 265/75R16 tire that's the same outside diameter as the 265/0R17 tires. The brakes seem to behave better now even tho the fluid is black as pitch. Whether this has any bearing on the speedometer is up for grabs. It wasn't reading properly when I had the 285 tires on her. It's dead nuts now according to the handy dandy "your speed is" radar trailer setup by one of the local town police departments.
EDIT**^^ this only affects the ABS and any associated traction control operation it doesn't fix the shift points and fuel map usage in the PCM. The speedometer was still off by a fair amount. Doing it right is a two part operation... You need to change the ABS tire size with a Tech2 or MDI and then the PCM tire size with an aftermarket tool to make everything work properly with larger or smaller tires.
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My local dealer had some GMT800 molded Bowtie splash guards collecting dust on the shelf so I got em for a decent price. Never hurts to ask.
  • GM 12498060 Front Splash Guard Kit
  • GM 12498342 Rear Splash Guard Kit

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I replaced the cracked and leaking third brake light lens with a brand new AC Delco lens... $38 on evilbay. No sign of any leaks when I test drove it and picked it up but the headliner fabric was damp the morning after I drove it home in a driving rain storm. I guess rain wasn't an issue where it was titled in Reno Nevada.
It doesn't look any different from the ground and I didn't snap any pics when I replaced it so no pictures guys...
My 2000 C2500 doesn't sit this high but this one is almost like my 76 was before I removed the 4" suspension lift. I'm 6'4" and the drivers seat is too high for me to just jump in. I installed Promaxx 211537S wheel to wheel 3" stainless step bars. Now I can step up into the unreasonably high cab and I can reach into the forward end of the bed without a stepladder.
You can see one of the step bars in this picture... the pretty new cyclops brake light lens is in the picture too but it doesn't look much different from the old one til you get up close.

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__________________
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...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; 02-04-2019 at 05:09 PM.
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