Allison Transmission

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posted
20 years ago

Thu, Feb 26, 2004 1:05 AM

Anyone experience problems with the Neutral Safety Backup Switch (NSBU) on the Allison transmission. I have an 01 Chevy 2500HD C/C S/B 4X4 DMAX/Allison and just had the switch replaced. The transmission was only 800km out of warranty! The tech at GM said they replace a fair number of these units. Does anybody know if there was a a problem with the design of these that cause them to fail? I saw a post that said that Allison makes a better switch but GM has yet to incorporate it in their vehicles.

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- TransSurgeon
  
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posted
20 years ago

Thu, Feb 26, 2004 1:25 AM

yup

a high-failure-rate item

DMAX/Allison

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posted
20 years ago

Thu, Feb 26, 2004 1:45 AM

How would you feel if GM asked you to not honour your warranty because in "just 800KM" it will be out of warranty? I know it sucks but business is business....

~KJ~

DMAX/Allison

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- Mastermech
  
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posted
20 years ago

Mon, Mar 1, 2004 2:10 PM

I had a bearing spin in my 92 at 46000 miles. 10 thousand beyond warranty and of course GM would do nothing to help out. The GM longblock I put in came with a 3yr 50,000 mile warranty. Don't figure!