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| Transmission Shop Discuss the Allison OEM, aftermarket, and the ZF-6. |
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11-06-2012, 12:02 PM
| eBay Motors #1 (permalink) |
| Senior Member  Join Date: Jan 2010 Location: home is where I hang my hat
Posts: 938
| long hesitation between 3-4 shift - what is going on? My truck is a 2006 LBZ with 60K miles. Transgo Jr. installed at 15K miles. It was drained and refilled twice this time last year with Transynd and a new spin-on filter. My concern is that the 3-4 shift has been much slower than the rest of the shifts lately. Under normal acceleration, if there is a 1/2 second hesitation (barely noticeable) between 1-2 and 2-3, then the 3-4 is 1-1/2 to 2 seconds (very noticeable). It gets worse the faster I accelerate or if the truck is cold. I haven’t noticed any slipping (RPM jump between shifts). The tach just sits in the same spot during the shift, then drops down afterwards . Any idea what might be going on? Any help is appreciated!
__________________ 06 CCSB LBZ 4x4 LT3; torsion key lift (leveled); 265/75-16 Pro Comp A/T on OEM wheels (winter), BFGoodrich Rugged Terrain 275/70-18 on XD Diesel 18x9 (summer); MBRP 4" turbo back with Corsa muffler; EGR blocked; Edge Insight CTS gauges; EFI Live DSP2 by Idaho Rob - 80HP DD and 40HP tow with turbo brake (love it!); Rancho 9000XL shocks; updated rear cab mounts; Transgo Jr.; Merchant Automotive tie rod sleeves; everything synthetic; Access Tonneau hiding Line-X; tinted windows 5% all around; Tekonsha P3 brake controller; HIR bulbs, more to come soon...... |
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11-06-2012, 12:16 PM
| eBay Motors #2 (permalink) |
| DF Sponsors   Join Date: May 2006
Posts: 1,993
| Fuel filter.
__________________ 2011 LML Chevy Duramax CCSB 4X4 Custom Transmissions, Converters, Kits. Coolers. Suncoast converters, Goerend custom converters. 714 870 7300 |
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11-06-2012, 12:26 PM
| eBay Motors #3 (permalink) |
| Senior Member Join Date: Jan 2010 Location: home is where I hang my hat
Posts: 938
| Wow, I would have never guessed that. I'll throw one on there.
__________________ 06 CCSB LBZ 4x4 LT3; torsion key lift (leveled); 265/75-16 Pro Comp A/T on OEM wheels (winter), BFGoodrich Rugged Terrain 275/70-18 on XD Diesel 18x9 (summer); MBRP 4" turbo back with Corsa muffler; EGR blocked; Edge Insight CTS gauges; EFI Live DSP2 by Idaho Rob - 80HP DD and 40HP tow with turbo brake (love it!); Rancho 9000XL shocks; updated rear cab mounts; Transgo Jr.; Merchant Automotive tie rod sleeves; everything synthetic; Access Tonneau hiding Line-X; tinted windows 5% all around; Tekonsha P3 brake controller; HIR bulbs, more to come soon...... |
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11-10-2012, 12:39 PM
| eBay Motors #4 (permalink) |
| Junior Member  Join Date: Mar 2007 Location: MI
Posts: 58
| did you try the fuel filter yet? im having a simular problem
__________________ 2010 silverado ccsb, 4x4, 5" diamond eye, egr block, transgo jr., insight, efi by rob 2005 ecsb, 4x4, 6" lift, 35's, cold air, 4" exhaust, edge juice (sold) http://WWW.DMAXSTORE.COM/ |
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11-10-2012, 03:32 PM
| eBay Motors #5 (permalink) | |
| Senior Member Join Date: Jan 2010 Location: home is where I hang my hat
Posts: 938
| Quote:
__________________ 06 CCSB LBZ 4x4 LT3; torsion key lift (leveled); 265/75-16 Pro Comp A/T on OEM wheels (winter), BFGoodrich Rugged Terrain 275/70-18 on XD Diesel 18x9 (summer); MBRP 4" turbo back with Corsa muffler; EGR blocked; Edge Insight CTS gauges; EFI Live DSP2 by Idaho Rob - 80HP DD and 40HP tow with turbo brake (love it!); Rancho 9000XL shocks; updated rear cab mounts; Transgo Jr.; Merchant Automotive tie rod sleeves; everything synthetic; Access Tonneau hiding Line-X; tinted windows 5% all around; Tekonsha P3 brake controller; HIR bulbs, more to come soon...... | |
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11-11-2012, 01:17 PM
| eBay Motors #6 (permalink) | |
| DuramaxForum Veteran  Join Date: Mar 2011 Location: Huntersville, NC
Posts: 1,231
| Quote:
__________________ Justin 2001 LB7 Silverado 2500HD LT CCSB 4x4. EFI Live by Idaho Rob, 296K+ and rolling, Undercover Bed Cover, Vortex spray in bed liner, Westin steps, Bilstein Shocks, Road Master Active Suspension, MBRP 5" Exhaust, Edge Insight CTS, K&N drop in filter, AirDog II 100, Nicktane w/ CAT 750, Running on LMM Blacked out Wheels & Michelin LTX M/S2 tires. ADRENALINE TRUCK PERFORMANCE APPALACHIAN COAL ROLLERS Merchant Automotive CENTRAL FLORIDA DURAMAX | |
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12-06-2012, 04:31 AM
| eBay Motors #7 (permalink) | |
| Senior Member Join Date: Jan 2010 Location: home is where I hang my hat
Posts: 938
| Quote:
I changed the fuel filter a few weeks ago and the shifting is no different. What is next on the list to check out?
__________________ 06 CCSB LBZ 4x4 LT3; torsion key lift (leveled); 265/75-16 Pro Comp A/T on OEM wheels (winter), BFGoodrich Rugged Terrain 275/70-18 on XD Diesel 18x9 (summer); MBRP 4" turbo back with Corsa muffler; EGR blocked; Edge Insight CTS gauges; EFI Live DSP2 by Idaho Rob - 80HP DD and 40HP tow with turbo brake (love it!); Rancho 9000XL shocks; updated rear cab mounts; Transgo Jr.; Merchant Automotive tie rod sleeves; everything synthetic; Access Tonneau hiding Line-X; tinted windows 5% all around; Tekonsha P3 brake controller; HIR bulbs, more to come soon...... | |
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12-06-2012, 04:49 AM
| eBay Motors #8 (permalink) |
| Junior Member  Join Date: Oct 2012 Location: Nebraska
Posts: 64
| subd, I have a similar problem except I have 160000 miles so I was just figuring its about time for a tranny build |
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12-06-2012, 05:02 AM
| eBay Motors #9 (permalink) |
| Senior Member Join Date: Jan 2010 Location: home is where I hang my hat
Posts: 938
| With my "hot" tune being 80HP, I sure hope I didn't smoke the trans in 60K miles, but its always possible.
__________________ 06 CCSB LBZ 4x4 LT3; torsion key lift (leveled); 265/75-16 Pro Comp A/T on OEM wheels (winter), BFGoodrich Rugged Terrain 275/70-18 on XD Diesel 18x9 (summer); MBRP 4" turbo back with Corsa muffler; EGR blocked; Edge Insight CTS gauges; EFI Live DSP2 by Idaho Rob - 80HP DD and 40HP tow with turbo brake (love it!); Rancho 9000XL shocks; updated rear cab mounts; Transgo Jr.; Merchant Automotive tie rod sleeves; everything synthetic; Access Tonneau hiding Line-X; tinted windows 5% all around; Tekonsha P3 brake controller; HIR bulbs, more to come soon...... |
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12-06-2012, 05:14 AM
| eBay Motors #10 (permalink) |
| Junior Member  Join Date: Jun 2012 Location: N.E. Wisconsin
Posts: 85
| What does your boost do between those shifts? My truck is doing this right now and my tuner and I believe it has to do with tuning. There is a larger defuel between 3-4 that causes a hesitation, and u can really notice it when u watch the boost fall off to hardly anything. I do not notice it on my stock tune, just any other tune I run(50, 75, 100). But I am no expert and I have also been having this problem, so if you figure somethin else out, let us know! Sent from my iPhone using AutoGuide.com App
__________________ 007 LBZ-ccsb-LT3-4" MBRP-EFI live-Air Dog II 165-8000k HIDs lows/fogs-Edge Insight CTS-Transgo Jr. |
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