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#1
10-11-2010, 10:43 PM
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On Board Diagnostics - How Accurate?
My new GMC Yukon has on board diagnostics that have the capability of telling me way more info than I probably care to know [img]<<GRAEMLIN_URL>>/rolleyes.gif[/img] Does anyone know how accurate the OBD tire pressure monitoring is on these new vehicles? It tells me I need to inflate my tires a few pounds, but my somewhat pricey tire inflator with built in analog gage says they're OK, and I'm not sure which to believe [img]<<GRAEMLIN_URL>>/dunno.gif[/img]
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Bill Pritchard 73 Camaro RS Z28, L82, M20, C60 
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#2
10-11-2010, 11:29 PM
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Re: On Board Diagnostics - How Accurate?
The factory sensors are fairly accurate. There are separate ones for each tire and if all 4 says your low.. then Id say you are..
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Frank Szymkowski 1987 Mustang GT convertible, scarlet red/titanium, white top and white/red leather, 5 speed, 3.08, factory EQ 1969 GTO Judge Warwick blue/blue, RAIII, 4 speed, tach/gauges, safe t track, flip headlights, 3.55's, ps and radio.
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#3
10-12-2010, 07:21 AM
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Re: On Board Diagnostics - How Accurate?
I would say that your analog gauge has more fault tolerance than the digital ones. Trust the new technology!
Jan
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#4
10-12-2010, 02:01 PM
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Re: On Board Diagnostics - How Accurate?
I compared my `09 Malibu OBD tire pressures against my old tire gauge, and they were nearly identical readings.
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