I lowered the pressure that triggers TPS light to 26 LBS - Chevy and GMC Duramax Diesel Forum
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post #1 of 3 (permalink) Old 12-07-2019, 07:34 AM Thread Starter
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I lowered the pressure that triggers TPS light to 26 LBS

Last time I rotated my tires I lowered the pressure in the rear tires to 55 for comfort when I'm not towing and kept the fronts at 60 LBS. it seemed like the computer didn't know I moved the lower pressure to the rear and the TPS light was coming on.
I didn't mind except that I'd have to keep Dismissing the light to change the radio station and see the digital speed readout. I looked up if I could teach the computer that I rotated and the forum lead me to believe I needed my Snap On computer.
I see my options for TPS included three or four different settings for minimum pressures that make the check light come on. I chose the last one called "E" and it set it to 26 LBS before the check light comes on. now I don't have to deal with the low tire pressure light.
Thought I'd share because I've seen people on the forum running low pressure and having to deal with the check TPS light.

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post #2 of 3 (permalink) Old 12-24-2019, 06:44 AM
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What year is your truck? Iíve been trying to figure out how to do this on my 2013.


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post #3 of 3 (permalink) Old 12-24-2019, 01:27 PM
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You'll need something like the Snap-on tool/program or a Tech 2, nothing else can make those changes, other than a dealer which you would be pretty lucky if you can get'er done at a dealer.
Hypertech has a device where you can lower the low pressure settings for around $300.
I gots my rears lowered to 48 low and up to around 95 high using Snap-on program on laptop at a shop.
Fronts are factory 42 low 75 high, that's what I had my rears set at for 10 years but everytime I bumped the rears up to 75 when towing I dealt with the high warning @ 76.

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