Question: Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans Problems: No O/D ? - Page 6 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
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Old 11-24-2012, 05:23 PM   #51 (permalink)
darthtater
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Okay thanks for the info guys . I'll look into the plug and let you all know what happens

~Tater
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~ 1993 Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans 3.73 Ratio (180,xxx miles)
New Radiator With Side Oil Coolers
Upgraded Oil Lines
Upgraded Mechanical Injector Pump
Upgraded Heads (Nickel Plated, Bigger Bore)
Motor overhaul less then 20K miles ago
Nexen AT II 16" 10 Ply Tires
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Old 11-27-2012, 12:39 PM   #52 (permalink)
darthtater
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Put in the new TCM..no change. Going to check the plug tonight. Let you all know what happens.

~Tater
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~ 1993 Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans 3.73 Ratio (180,xxx miles)
New Radiator With Side Oil Coolers
Upgraded Oil Lines
Upgraded Mechanical Injector Pump
Upgraded Heads (Nickel Plated, Bigger Bore)
Motor overhaul less then 20K miles ago
Nexen AT II 16" 10 Ply Tires
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Old 11-27-2012, 12:45 PM   #53 (permalink)
darthtater
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Oh forgot to say, there is no code 39 with the new one so it is reading the TPS correctly. So the other computer was bad anyway but this new one didn't the shifting problem.

~Tater
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~ 1993 Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans 3.73 Ratio (180,xxx miles)
New Radiator With Side Oil Coolers
Upgraded Oil Lines
Upgraded Mechanical Injector Pump
Upgraded Heads (Nickel Plated, Bigger Bore)
Motor overhaul less then 20K miles ago
Nexen AT II 16" 10 Ply Tires
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Old 11-27-2012, 01:41 PM   #54 (permalink)
bigblazer
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Its kinda funny but, i had a jeep cherrokee in the week that would shift 1,2,3,od, but as soon as it hit od it would go limp and lock in 2nd till i shut it off.owner replaced tcm no change.was the plug on the trans, leaking oil,wires exposed from from tranny fluid eating plastic insulation.
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94 Chevy blazer. 929 block, hd 4l80e, pmd relocated in bumper, #9 resister, ssd "80" hp chip, gm8 with DIY boost controller now 18psi, 3 down tube 4" straight pipe 5" tip, k&n cone, optic bump, kennedy injectors, boost/egt/trans/oil pres/water temp gauges, 3 core aluminum radiator w/dual fans, 98 "h.o" w/p with restricters installed, cowl hood. 4.10s in 14b semi floater, 35 firestone m/ts 8" rough country lift 3" body lift. Dos cientos quatro whp As of 2/21/13 thats all she's gonna put out!
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Old 11-27-2012, 03:57 PM   #55 (permalink)
darthtater
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Thats a big problem with these. They actually has a service bulletin about them affecting all 91-92 4l80e's. So that's where i'm headed next.
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~ 1993 Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans 3.73 Ratio (180,xxx miles)
New Radiator With Side Oil Coolers
Upgraded Oil Lines
Upgraded Mechanical Injector Pump
Upgraded Heads (Nickel Plated, Bigger Bore)
Motor overhaul less then 20K miles ago
Nexen AT II 16" 10 Ply Tires
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Old 11-27-2012, 03:57 PM   #56 (permalink)
darthtater
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91-93*
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~ 1993 Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans 3.73 Ratio (180,xxx miles)
New Radiator With Side Oil Coolers
Upgraded Oil Lines
Upgraded Mechanical Injector Pump
Upgraded Heads (Nickel Plated, Bigger Bore)
Motor overhaul less then 20K miles ago
Nexen AT II 16" 10 Ply Tires
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Old 11-27-2012, 06:21 PM   #57 (permalink)
darthtater
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Well opened up the plug and sure enough there was the tranny fluid. It wasn't very much but it was defiantly noticeable. I cleaned it all off and plugged it in and drove it with no change. I am taking it to a shop next week and having them scan it because I am about to crush this stupid thing. Any other idea would be helpful because I'm about fed up. Good day to you all.

~Tater
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~ 1993 Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans 3.73 Ratio (180,xxx miles)
New Radiator With Side Oil Coolers
Upgraded Oil Lines
Upgraded Mechanical Injector Pump
Upgraded Heads (Nickel Plated, Bigger Bore)
Motor overhaul less then 20K miles ago
Nexen AT II 16" 10 Ply Tires
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Old 11-27-2012, 07:08 PM   #58 (permalink)
FloridaHorseman
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If you clean it and put it back together it still leaks. And there's probably tranny fluid inside the wires, too. I doubt anything short of a plug and harness upgrade will do much to address the problem now. ~FH
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1994 Chevy K1500 Z71, 6.5L TD 145,000 miles, bumper mount PMD, LP relay mod, filter sock delete -SOLD-
1998 Chevy K3500, 454 horse hauler , 175,000 miles, tuned flow-through exhaust, pillar gauges (vac, trans temp, volts), electric cooling fans, external trans cooler & fan, manual TCC lockup mod, limo tint, front & rear brush guards, B&W G/N flip hitch, spray-in bed liner, chrome wheel inserts


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Old 11-28-2012, 12:29 PM   #59 (permalink)
darthtater
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Well I'm having a shop scan it with a GM Tech II. If the harness is messed up will it just show that it isn't communicating right or something? And sorry for the rudeness of the last post it was just aggravating me lol. Thanks for the help guys I'll let you know how the scan goes.

~Tater
__________________
~ 1993 Chevy Silverado K2500 6.5L TD 4X4 4L80E Trans 3.73 Ratio (180,xxx miles)
New Radiator With Side Oil Coolers
Upgraded Oil Lines
Upgraded Mechanical Injector Pump
Upgraded Heads (Nickel Plated, Bigger Bore)
Motor overhaul less then 20K miles ago
Nexen AT II 16" 10 Ply Tires
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Old 11-28-2012, 01:54 PM   #60 (permalink)
FloridaHorseman
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I sincerely doubt a scan will reveal anything more than the transmission related DTC's you already got. DTC's simply tell there's a problem communicating with the part and assumes the communication pathway (the wiring) is OK. That's why a bad wiring connection is usually the fix of last resort. If you notice, the service bulletin on the leaking pass-through connector doesn't cite an associated DTC. Only the visual inspection and call for replacement if it's wet.

I've never replaced an internal tranny harness myself but from what I've read it can be done without removing the transmission. But there's a crapload of check balls that will fall out when you drop the plate the harness runs behind to the solenoids. I'd bite the bullet and pay a good service center to do the harness install correctly. ~FH
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1994 Chevy K1500 Z71, 6.5L TD 145,000 miles, bumper mount PMD, LP relay mod, filter sock delete -SOLD-
1998 Chevy K3500, 454 horse hauler , 175,000 miles, tuned flow-through exhaust, pillar gauges (vac, trans temp, volts), electric cooling fans, external trans cooler & fan, manual TCC lockup mod, limo tint, front & rear brush guards, B&W G/N flip hitch, spray-in bed liner, chrome wheel inserts


Engine "No Start" Checklist
Diagnostic Checklist
OBD1 Trouble Codes
OBD2 Trouble Codes
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