How to fix Codes P0826-P0827??? - Chevy and GMC Duramax Diesel Forum

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post #1 of 16 (permalink) Old 04-19-2011, 03:12 PM Thread Starter
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How to fix Codes P0826-P0827???

I was out the other day and stepped in to it a bit and got the old check engine light...These are the codes i got...P0826 Up and Down Shift Switch Circ.- P0827 Up and Down Shift Switch Circ Low..Were should i start to fix this prob.??

06 GMC CC Dually LBZ
EFI Live, S&B intake, EGR Blocking plate, PCV reroute, 4" MBRP straight pipe.
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post #2 of 16 (permalink) Old 04-19-2011, 03:27 PM
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Not much on 826, but here's a link for 827 site:duramaxforum.com P0827 - Google Search

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post #3 of 16 (permalink) Old 04-19-2011, 03:58 PM
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That is the up and down switch for your tap shifter in the steering column. Check ignotion 0 fuse.
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post #4 of 16 (permalink) Old 04-19-2011, 06:23 PM
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If the fuse is OK, you probably have a broken wire at the switch.

The wires are very small, and like the others in the column, they do break at times.

The wires may be broke, even though the insulation looks OK. You will need to check the circuit with a meter.

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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post #5 of 16 (permalink) Old 08-04-2011, 08:36 PM
 
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hey sir i have right now that problem.... but what other issue this error afect the car? cuz when i ran over 45Mph its loke something is stoping the car doesnt run well when u quit the foot of the acelerator and also when u accelerate the rpm when stuck for a moment and then suddenly comes the forced shift
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post #6 of 16 (permalink) Old 06-08-2013, 04:55 AM
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This was a great help thank you to all respondents. I found the orange wire that contained the four very thin wires, two black and two white. A black and white were already cut and the other two were soon to follow. The whole repair took less than an hour.

This site is fantastic.

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post #7 of 16 (permalink) Old 07-25-2013, 04:07 PM
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hey paint guy can you tell me where to find these wires in the steering column. i have that P0826 code and think thats the issue.

2006 Chevy LBZ RCLB 4x4. EGR delete with high flow Y bridge by HSP diesel. EFI live by HSP diesel. Trans go Jr shift kit, MBRP DP, 5in strait pipe to a MBRP 7" black miter cut stack, Modded factory air box with K&N, Custom PCV reroute,
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post #8 of 16 (permalink) Old 07-25-2013, 04:34 PM
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Remove the lower steering column cover, look where the wires are held down at the column.

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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post #9 of 16 (permalink) Old 07-26-2013, 06:03 AM
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There is what looks like an orange wire that you won't miss on the shifter side of the steering column. The orange wire is a case with 4 very thin wires in it and on mine two were broken most of the way through. I soldered them back together and fixed the other two at the same time to stop them from breaking the following week and then heat shrieked the repairs. So far so good.

2006 LBZ Silverado Crew Cab Long Bed 4x4 Duramax

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post #10 of 16 (permalink) Old 07-26-2013, 07:17 AM
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Ok thanks for the help guys! I will look at it tonight when I get off of work. If you had to guess what is the gauge of the little wires that might be cut? I love this forum, I was going nuts trying to figure that CEL light!

2006 Chevy LBZ RCLB 4x4. EGR delete with high flow Y bridge by HSP diesel. EFI live by HSP diesel. Trans go Jr shift kit, MBRP DP, 5in strait pipe to a MBRP 7" black miter cut stack, Modded factory air box with K&N, Custom PCV reroute,
all headlight mod, dual turn signal swap, 285/75/16 Cooper ATS 3 discovery powdered coated OEM wheels Plastic dipped pumpers, grill.
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