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Introduction
My first GMT800, 01 2500HD LQ4
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<blockquote data-quote="CPB" data-source="post: 22544" data-attributes="member: 12360"><p>[ATTACH=full]2643[/ATTACH]</p><p>Recently acquired a 2001 2wd 2500HD 8ft crew cab with the LQ4 with 125,000 miles.</p><p></p><p>I'll preface by saying I've used someone's 2500HD Duramax off and on for years for towing racecars. It seemed to be very reliable, simple to work on and capable of car hauling. Around 2018-2019 I decided I should get one for myself. Well, life happens and we all try to forget 2020.</p><p></p><p>Fast forward to present, this truck was somewhat neglected but found a home with me. It's not a diesel, so I was skeptical it would work well for car hauling. I was pleasantly surprised it's just fine and has lower repair/maintenance cost.</p><p></p><p>Maintenance Upgrades I've done so far;</p><p>-Replace headlights with modern LED with better visibility</p><p>-Replace foglights with modern LED</p><p>-Replace interior lights with LED</p><p>-Replace underhood light with LED</p><p>-New washer tank</p><p>-Rear right window motor and regulator</p><p>-Front left window motor</p><p>-Cabin filter</p><p>-Engine air filter</p><p>-Bleed brakes (fluid was black and 3%+ moisture)</p><p>-Flush power steering</p><p>-Replace AC orifice tube, seals, vacuum and recharge system</p><p>-Replace fuel filter</p><p>-Replace spark plugs</p><p>-Replace camshaft position sensor</p><p>-Replace corroded battery tray</p><p>-New differential fluid</p><p>-New transmission fluid</p><p>-New coolant</p><p>-New toolbox struts</p><p>-New DRL sockets</p><p>-New Atoto headunit with android auto</p><p>-New fuel pressure regulator</p><p>-Reverse camera</p><p>-New air spring elbows</p><p>-New speakers, old ones rotted to nothing</p><p>-New trailer connector that has both 7 and 4 pin. (Hopkins 40920)</p><p>-New wipers</p><p>-New idlers, tensioner, belts for both serpentines</p><p>-New rear cupholder clip</p><p>-New starter motor</p><p>-New key fob</p><p>-New 5th wheel pins</p><p>-Added wireless phone charger to armrest</p><p>-Replaced broken tailgate release clips</p><p>-New taillights</p><p>-3d printed block off plate for unused 4wd control, also 3d printed phone plate for dashboard</p><p></p><p>Future plans I'm considering</p><p><s>-New shocks, but still trying to figure out what I need </s><strong>Added Bilstein 4600's (24-060813, 24-060820) on 4-23-2025</strong></p><p>-Sulastic Shackles</p><p>-S&B Filters cab mounts</p><p>-Add a dorman fuel line check-valve into feed line</p><p><s>-Bilstein steering damper</s> <strong>Installed Bilstein 5100 (33-174525) on 4-23-2025</strong></p><p>-Air lift remote pump + control for the airsprings</p><p>-Revised ACDelco left valve cover #12570427</p><p>-Steering rebuild (pitman, idler, tierods)</p><p></p><p>Thanks for having me</p></blockquote><p></p>
[QUOTE="CPB, post: 22544, member: 12360"] [ATTACH type="full" alt="PXL_20250403_155801114.jpg"]2643[/ATTACH] Recently acquired a 2001 2wd 2500HD 8ft crew cab with the LQ4 with 125,000 miles. I'll preface by saying I've used someone's 2500HD Duramax off and on for years for towing racecars. It seemed to be very reliable, simple to work on and capable of car hauling. Around 2018-2019 I decided I should get one for myself. Well, life happens and we all try to forget 2020. Fast forward to present, this truck was somewhat neglected but found a home with me. It's not a diesel, so I was skeptical it would work well for car hauling. I was pleasantly surprised it's just fine and has lower repair/maintenance cost. Maintenance Upgrades I've done so far; -Replace headlights with modern LED with better visibility -Replace foglights with modern LED -Replace interior lights with LED -Replace underhood light with LED -New washer tank -Rear right window motor and regulator -Front left window motor -Cabin filter -Engine air filter -Bleed brakes (fluid was black and 3%+ moisture) -Flush power steering -Replace AC orifice tube, seals, vacuum and recharge system -Replace fuel filter -Replace spark plugs -Replace camshaft position sensor -Replace corroded battery tray -New differential fluid -New transmission fluid -New coolant -New toolbox struts -New DRL sockets -New Atoto headunit with android auto -New fuel pressure regulator -Reverse camera -New air spring elbows -New speakers, old ones rotted to nothing -New trailer connector that has both 7 and 4 pin. (Hopkins 40920) -New wipers -New idlers, tensioner, belts for both serpentines -New rear cupholder clip -New starter motor -New key fob -New 5th wheel pins -Added wireless phone charger to armrest -Replaced broken tailgate release clips -New taillights -3d printed block off plate for unused 4wd control, also 3d printed phone plate for dashboard Future plans I'm considering [S]-New shocks, but still trying to figure out what I need [/S][B]Added Bilstein 4600's (24-060813, 24-060820) on 4-23-2025[/B] -Sulastic Shackles -S&B Filters cab mounts -Add a dorman fuel line check-valve into feed line [S]-Bilstein steering damper[/S] [B]Installed Bilstein 5100 (33-174525) on 4-23-2025[/B] -Air lift remote pump + control for the airsprings -Revised ACDelco left valve cover #12570427 -Steering rebuild (pitman, idler, tierods) Thanks for having me [/QUOTE]
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My first GMT800, 01 2500HD LQ4
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