Reprogram Low Tire Pressure Limit? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Retro69 · 10-12-2015, 07:35 PM

I have a 2011 SS with ZL1/1LE wheels and tires. On the street I run them at 32 psi which is what's recommended on a 1LE. My TPMS runs about 2 psi low so between that and 32 psi I get low pressure alerts until the tires warm up. On cooler days I may never get the pressures up.

Can the low pressure limit be reprogrammed for the lower tire pressures? Is this a BCM function?

X25 · 10-12-2015, 08:23 PM

I don't think it's programmable, except perhaps by GM, itself? I'd love to learn, too. Hoosier R7s exceed 50 PSI, which might cause issues.

By the way, just in case you didn't know about this, I think your TPMS is measuring it right, if only you were at sea level. The sensors we have measure absolute pressure, while we get absolute - atmospheric pressure reported on TPMS screen. If you live in high altitude, your ambient pressure will drop, and your handheld pressure gauge will report higher numbers than TPMS, since it measures relative pressure, not absolute.

JimE · 10-12-2015, 08:48 PM

I'm surprised you are getting an alert. My cold pressures are 28.

I'm also having a slow leak in the RR. When I first caught it, I didn't get an alert until it was down to 24 I believe. I don't see how you are getting alerts, or why an '11 and '13 would be that different. In other words, it sounds like a system fault, not a programming issue (unless it's programmed completely wrong).

Retro69 · 10-12-2015, 09:05 PM

Quote:

Originally Posted by X25

I don't think it's programmable, except perhaps by GM, itself? I'd love to learn, too. Hoosier R7s exceed 50 PSI, which might cause issues.

By the way, just in case you didn't know about this, I think your TPMS is measuring it right, if only you were at sea level. The sensors we have measure absolute pressure, while we get absolute - atmospheric pressure reported on TPMS screen. If you live in high altitude, your ambient pressure will drop, and your handheld pressure gauge will report higher numbers than TPMS, since it measures relative pressure, not absolute.

I am at approx 5200 ft. You would think they would compensate for that though.

Retro69 · 10-12-2015, 09:58 PM

Quote:

Originally Posted by JimE

I'm surprised you are getting an alert. My cold pressures are 28.

I'm also having a slow leak in the RR. When I first caught it, I didn't get an alert until it was down to 24 I believe. I don't see how you are getting alerts, or why an '11 and '13 would be that different. In other words, it sounds like a system fault, not a programming issue (unless it's programmed completely wrong).

Yeah I'm not sure what is going on. Its pretty predictable though.. I always set the pressure using a high quality gauge after the car has sat overnight in the garage. After driving approximately 15 minutes any tire that hasn't reached 31 psi as per the TMPS I get the low tire warning.

I could always just ignore the warnings but if I had a *real* tire problem I might miss it until it's too late.

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GVA 45TH 2SS · 10-13-2015, 05:24 PM

Sorry I only can tell you the best way to heat up the back tires

Retro69 · 10-13-2015, 05:31 PM

Quote:

Originally Posted by GVA 45TH 2SS

Sorry I only can tell you the best way to heat up the back tires

ROFL I know that trick but my wife is already questioning my tire budget!

Fish-man · 10-13-2015, 05:56 PM

perhaps the dealer can lower it.

Ask them if they can call for a calibration from the 1le...

Retro69 · 10-13-2015, 06:23 PM

Quote:

Originally Posted by Fish-man

perhaps the dealer can lower it.

Ask them if they can call for a calibration from the 1le...

Worth a try I suppose. Thanks for the suggestion.

JimE · 10-13-2015, 07:15 PM

I would talk to them anyway. I don't see why you would get an alert for 31psi.

My tires yesterday were 28/28 fr and 28/26 rr No alerts. I would expect programming to be the same across all models. The recommended pressure is the same.

brettstoner · 01-31-2024, 01:02 PM

Yes you can program the TPMS PSI threshold or the dealer could do it for you if they wanted to. You need a VXDiag VCX Nano as a pass-through device so your laptop software can communicate with the car. You then use Tech2Win (2013 and older) or GDS2 (2014 and newer) software to program the front/rear pressures. You have to enter it as KPA instead of PSI. The software asks you what is the door placard so you would enter the KPA equivalent of what you want to run. Federal regulations require the low tire warning to come on when the pressure is 75% of what the vehicle is programmed for (which is the door placard if not changed).

10-12-2015, 07:35 PM	#1
Retro69 Drives: 2018 Camaro ZL1 Join Date: Jun 2011 Location: Morgan, UT Posts: 1,359	Reprogram Low Tire Pressure Limit? I have a 2011 SS with ZL1/1LE wheels and tires. On the street I run them at 32 psi which is what's recommended on a 1LE. My TPMS runs about 2 psi low so between that and 32 psi I get low pressure alerts until the tires warm up. On cooler days I may never get the pressures up. Can the low pressure limit be reprogrammed for the lower tire pressures? Is this a BCM function? __________________

10-12-2015, 08:23 PM	#2
X25 Drives: '16 C7 Z51 Join Date: May 2012 Location: Redmond, WA Posts: 3,056	I don't think it's programmable, except perhaps by GM, itself? I'd love to learn, too. Hoosier R7s exceed 50 PSI, which might cause issues. By the way, just in case you didn't know about this, I think your TPMS is measuring it right, if only you were at sea level. The sensors we have measure absolute pressure, while we get absolute - atmospheric pressure reported on TPMS screen. If you live in high altitude, your ambient pressure will drop, and your handheld pressure gauge will report higher numbers than TPMS, since it measures relative pressure, not absolute. __________________ '16 Corvette C7 Z51 1LT (Build Thread) '14 AGM 1SS 1LE [COTW 11/17/14] (Build Thread) (SOLD) '13 Mazda MX-5 Club (Build Thread) '17 RAM 1500 Crew Cab 4x4 Night Edition '15 Nissan Rogue S AWD

01-31-2024, 01:02 PM	#11
brettstoner Drives: 2014 Chevy Caprice PPV L77 Join Date: Jun 2021 Location: Toledo, OH Posts: 23	Yes you can program the TPMS PSI threshold or the dealer could do it for you if they wanted to. You need a VXDiag VCX Nano as a pass-through device so your laptop software can communicate with the car. You then use Tech2Win (2013 and older) or GDS2 (2014 and newer) software to program the front/rear pressures. You have to enter it as KPA instead of PSI. The software asks you what is the door placard so you would enter the KPA equivalent of what you want to run. Federal regulations require the low tire warning to come on when the pressure is 75% of what the vehicle is programmed for (which is the door placard if not changed). __________________ 2014 Caprice PPV, 6.0L, BTR Stage 2 LS3 N/A Cam, 2" ARH, 3" custom exhaust, 3.45, Circle D triple disc converter, Lloyd Elliot heads, Rotofab intake, Chris Henry tuned, future LSA....

10-12-2015, 08:48 PM	#3
JimE Drives: 2013 2SS/RS/1LE Join Date: Apr 2010 Location: St Louis, MO Posts: 3,087	I'm surprised you are getting an alert. My cold pressures are 28. I'm also having a slow leak in the RR. When I first caught it, I didn't get an alert until it was down to 24 I believe. I don't see how you are getting alerts, or why an '11 and '13 would be that different. In other words, it sounds like a system fault, not a programming issue (unless it's programmed completely wrong).

10-13-2015, 05:24 PM	#6
GVA 45TH 2SS KNGTFALL Drives: 2012 2SS 45th edition Join Date: Aug 2012 Location: (Near) Charlotte, NC Posts: 1,533	Sorry I only can tell you the best way to heat up the back tires

10-13-2015, 05:56 PM	#8
Fish-man Drives: too many to say! Join Date: Nov 2010 Location: S.E. Michigan Posts: 1,013	perhaps the dealer can lower it. Ask them if they can call for a calibration from the 1le...

10-13-2015, 07:15 PM	#10
JimE Drives: 2013 2SS/RS/1LE Join Date: Apr 2010 Location: St Louis, MO Posts: 3,087	I would talk to them anyway. I don't see why you would get an alert for 31psi. My tires yesterday were 28/28 fr and 28/26 rr No alerts. I would expect programming to be the same across all models. The recommended pressure is the same.