Tire pressure monitors

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Jun 1, 2009 | 04:55 PM

Hall1836

Thread Starter

Pro

Joined: Feb 2003

Posts: 664

Likes: 24

From: Farmingville NY

Tire pressure monitors

How tight do you make the nut on the TPMS can you over tighten them? Can't compare them to the one's I have, will be mounting new wheels. Thanks.

Jun 1, 2009 | 07:49 PM

japc5

Burning Brakes

Joined: Apr 2008

Posts: 855

Likes: 40

From: Liverpool NY

Yes you can overtighten them and snap the valve stem the manual says to:

"Tighten the nut to 12 N·m (106 lb in)"

This is inches not foot lbs.

Jun 1, 2009 | 09:18 PM

timemender

Burning Brakes

Joined: Aug 2006

Posts: 1,217

Likes: 5

From: Stark County Ohio

The TPS have rubber "o-rings" (97-2000) or rubber bushing type seals (2001-2004).

Over tightening can distort the seals rendering them ineffective.

Jun 1, 2009 | 09:22 PM

timemender

Burning Brakes

Joined: Aug 2006

Posts: 1,217

Likes: 5

From: Stark County Ohio

P.S. –

Verify with the tire shop manager that your sensors are functioning properly, BEFORE any work is started.

Inexperienced installers can (and do) damage the sensors.

Jun 1, 2009 | 11:53 PM

87SAM

Safety Car

Joined: Jan 2001

Posts: 4,387

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From: Boise ID

It appears you may have a 2001, if so, the values would be 7 N·m (62 lb in).

Jun 2, 2009 | 10:20 AM

bighank

Melting Slicks

Joined: Jul 2006

Posts: 2,332

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From: Silver Spring MD

Real tight

Got new tires mounted at a GM dealer who roadforce balanced them.
Had a slight leak. Tightened nut. Problem solved.
BTW the DEALER TECHNICIAN ruined one of my sensors. Talked to the service manager. Told him "came IN with 4 working TPMs will LEAVE with 4" and I'm not paying for technicians error. The service manual says to loosen nut and let TPM go inside wheel BEFORE trying to unmount old tire. He didn't do that. 3 of them survived. 1 did not.

BIGHANK

Last edited by bighank; Jun 5, 2009 at 09:49 AM.

Jun 3, 2009 | 10:38 AM

GCG

Melting Slicks

Joined: Jan 2009

Posts: 3,275

Likes: 739

From: Miami FL

Quote:

Originally Posted by bighank

...The service manual says to loosen nut and let TPM go inside wheel BEFORE trying to unmount old tire...

I did not know that

So whenever a tire needs to be unmounted for whatever reason (to install a new tire or fix a flat), the TPM has to be removed first as explained above, right?