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5.3L Fuel Gauge Wiring

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Old 11-26-2005, 08:04 PM
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Default 5.3L Fuel Gauge Wiring

I'll be installing an aftermarket fuel gauge so need confirmation that at the gas tank the "PPL" color wire connects the fuel sender to the OEM fuel gage on a '00 GMC Sierra 5.3L engine. Thanks

Last edited by seon; 11-26-2005 at 08:15 PM.
Old 11-26-2005, 10:58 PM
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Actually, the ppl wire goes to the ECM, and the ECM controls the fuel gauge via Serial Data.
Old 11-26-2005, 11:03 PM
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So which color wire controls the fuel sender so that I can tap into? I used the '00 GMC chassis and running gear as my donor then mounted my '56 Burb body on the chassis. Now I need to connect my aftermarket fuel gauge to the sender. Thanks
Old 11-27-2005, 06:46 AM
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Well then you would want the ppl wire. The only other option would be the black wire, and that one is a ground.
Old 11-27-2005, 10:50 AM
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seon,

Just a word to the wise, the stock fuel senders in the '99-2002 trucks are prone to failure. Mine started acting up at about 40k miles. They will read empty when the tank is full and also after idling for more than 30-45 seconds. Mostly they behave erratically, sometimes working and sometimes not. So, if you are having problems with your gauge, the sender might be the culprit. So far I am just living with it as they are expensive to replace and dropping the tank will be a PITA. I have heard that the replacement units are not any better and will eventually fail also.

Pat
Old 11-27-2005, 11:37 AM
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Pat, thanks for the info. I'll cross my fingers and hope I don't get that problem once I get the Burb running.

Old 11-27-2005, 11:40 AM
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Originally Posted by Stu Cool
seon,

Just a word to the wise, the stock fuel senders in the '99-2002 trucks are prone to failure. Mine started acting up at about 40k miles. They will read empty when the tank is full and also after idling for more than 30-45 seconds. Mostly they behave erratically, sometimes working and sometimes not. So, if you are having problems with your gauge, the sender might be the culprit. So far I am just living with it as they are expensive to replace and dropping the tank will be a PITA. I have heard that the replacement units are not any better and will eventually fail also.

Pat
agreed they are very prone to failure, my 99 silverado has had a bad sender for about a year now. Also im not sure if there are any aftermarket gauges that are compatable with the newer gm ohm ranges
Old 11-27-2005, 11:24 PM
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What is the ohm range?



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