The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 99-06 GMT800 Chevy and GMC Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-18-2020, 07:20 PM   #1
cerial
Registered User
 
cerial's Avatar
 
Join Date: Mar 2014
Location: Ionia, MI
Posts: 199
Aftermarket fuel gauge OHMS

I have a 01 2500HD that is my new tow pig/winter beater.
The previous owner installed 2 pods which both have voltage gauges in them currently. The cluster one did not read correct or something they said.

I am pulling the entire junk cluster and going to run torque off a android tablet. I am going to put aftermarket oil and fuel into the pods that were used for voltage.

I want to just pull the pins off the cluster connection and run that to a fuel gauge and if possible use the oil pin to reuse as much of this harness as I can.

I am not sure which pins/wires that I will connect to the harness and more importantly I am not sure of the OHM rating that will work with the factory fuel sending unit on this truck.

Figured I would ask before I end up with a "extra" 0-90 ohm gauge.

Any help that you can provide will be appreciated.
__________________
1991 Metro commuter
1991 s10 future project truck
1987 V10 backup daily/junk truck
1985 K20 Winter beater
1991 R30(squarebody) c/c flatbed towrig
1994 s10 80"wb custom build
cerial is offline   Reply With Quote
Old 04-19-2020, 10:57 AM   #2
hatzie
Moderator
 
hatzie's Avatar
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,975
Re: Aftermarket fuel gauge OHMS

I believe all of the T800 trucks instrument panels are digital using stepper motors to drive the needles... unlike the older rigs with air core analog gauges.
Most if not all of the gauges in the instrument cluster get their information from the PCM over the Class II serial link.

The 2nd design T800 that started in 2003 had problems with the stepper motors in the gauges failing and cracking solder joints on the SMT resistors. There are bunches of videos on repairing them. I'm not sure about the 1st design 99-02 trucks.

You can do lamp and gauge sweep tests using a Tech 2 to figure out whether the gauges and lamps are working then go from there.

You can leave it plugged in. I would. Why do more work than you need to. Torque Pro and a decent quality Bluetooth CAN/OBD II adapter will let you use an Android tablet or phone to display custom gauges. You need to enable the extra GM PIDs. You can get PCM Voltage, Eng Temp, Eng Oil Pressure, Fuel Level, Trans Temp, Tach, Speedometer, and Odometer along with several other pieces of data displayed on a tablet or large phone. All of that data comes out over the J1962 OBD II datalink.
__________________
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; 04-19-2020 at 03:12 PM.
hatzie is online now   Reply With Quote
Old 04-19-2020, 11:51 AM   #3
hatzie
Moderator
 
hatzie's Avatar
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,975
Re: Aftermarket fuel gauge OHMS

According to jeffscortlx if your 99-02 fuel gauge isn't working it's probably the sender.
He re-works gauge clusters for various dealerships for a living and knows what he's doing.
__________________
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; 04-21-2020 at 07:40 AM.
hatzie is online now   Reply With Quote
Old 04-22-2020, 05:33 PM   #4
cerial
Registered User
 
cerial's Avatar
 
Join Date: Mar 2014
Location: Ionia, MI
Posts: 199
Re: Aftermarket fuel gauge OHMS

The fuel gauge and oil gauge both work on the cluster. But I do not have a computerized oil pressure reading with a 01. Think they changed it in 03 or 04 to where you can see oil pressure on a scan tool using the ecm.

I want to see more things then the stock cluster can provide like intake temps and timing. The only thing I can not see in the torque app is fuel level and oil. Oil is easy I can stab a sender in the hole and run a wire if need be. But the fuel lines on this are in good condition and I do not want to drop the tank.

Anyone know the ohm rating?

If it comes to it I will get some new stock fuel and oil steppers. But I would rather just plug in a gauge then build one.
__________________
1991 Metro commuter
1991 s10 future project truck
1987 V10 backup daily/junk truck
1985 K20 Winter beater
1991 R30(squarebody) c/c flatbed towrig
1994 s10 80"wb custom build
cerial is offline   Reply With Quote
Old 04-23-2020, 07:47 PM   #5
hatzie
Moderator
 
hatzie's Avatar
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,975
Re: Aftermarket fuel gauge OHMS

If your cluster is working or part of it... it might be worth looking into a cell phone or tablet mount so you can have more screen realestate for the additional gauges not found in the stock cluster.
__________________
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; 04-23-2020 at 08:01 PM.
hatzie is online now   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:05 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com