Tach Gauge Problems '05 2500HD - The 1947 - Present Chevrolet & GMC Truck Message Board Network

blime81 · 08-16-2010, 04:01 PM

Ok so my tach seems to work intermittently on this truck. Sometimes it seems right on and sometimes its way low (like it's off at idle and then barely over 1k when I'm on the gas hard). Sometimes it does nothing at all.

I'm pretty sure that the gauges must go bad in these pretty regularly judging by the amount of cluster swap options available. (My folks have a 04 Trailblazer with similar issues except theirs is speedo, gas gauge etc.)

I'm wondering if there is an easy or cheap fix for this (besides replacing the whole cluster)? When I had issues with my the 4wd switch in my '99 everyone said to replace it. I pulled it out and cleaned the contacts and it was good for another 30k until I sold the truck.

Any ideas? Thanks in advance.

**bwood** · 08-16-2010, 06:26 PM

You can replace the stepper motors for the gauges yourself. I have not personally done it, but there are folks on here you have (I think). I believe you can get the stepper motors on eBay. Dorman Products now offers these clusters. You should be able to get Dorman stuff at any parts store.

**truckdude239** · 08-16-2010, 07:36 PM

how many miles on it i how gm did an 8 year 80,000 mile warranty onthe gages

**truckdude239** · 08-16-2010, 07:36 PM

btw dorman now makes replacements that are plug and play they put your mile in and everything

JohnC · 08-16-2010, 08:12 PM

I've had mine replaced/repaired twice. Nice to see that Dorman is selling a replacement. Hopefully it's cheaper than the $250 price tag to have it repaired.

**truckdude239** · 08-16-2010, 09:52 PM

the core charge is 300.00 on its own

JohnC · 08-17-2010, 03:08 PM

Ouch! Then I guess having mine repaired for $250 wasn't too bad then considering. Still hated to shell it out though.

08-16-2010, 04:01 PM	#1
blime81 Laid Lo Join Date: Aug 2008 Location: Oceanside CA Posts: 277	Tach Gauge Problems '05 2500HD Ok so my tach seems to work intermittently on this truck. Sometimes it seems right on and sometimes its way low (like it's off at idle and then barely over 1k when I'm on the gas hard). Sometimes it does nothing at all. I'm pretty sure that the gauges must go bad in these pretty regularly judging by the amount of cluster swap options available. (My folks have a 04 Trailblazer with similar issues except theirs is speedo, gas gauge etc.) I'm wondering if there is an easy or cheap fix for this (besides replacing the whole cluster)? When I had issues with my the 4wd switch in my '99 everyone said to replace it. I pulled it out and cleaned the contacts and it was good for another 30k until I sold the truck. Any ideas? Thanks in advance. __________________ Semper Fi, Jeff '72 C10 - lays frame '07 Sand Rail - ecotec powered '05 2500HD - tows stuff '67 VW Bug - gas saver '01 Jeep TJ - rock crawler

08-16-2010, 06:26 PM	#2
bwood Registered User Join Date: Jan 2003 Location: Denison, Texas Posts: 1,919	Re: Tach Gauge Problems '05 2500HD You can replace the stepper motors for the gauges yourself. I have not personally done it, but there are folks on here you have (I think). I believe you can get the stepper motors on eBay. Dorman Products now offers these clusters. You should be able to get Dorman stuff at any parts store. __________________ 1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec -Gibson Stainless Cat Back Swept Side -SS Wheels 2005 Honda CRF250R 2006 Honda CRF150F Last edited by bwood; 08-16-2010 at 06:26 PM.

08-16-2010, 07:36 PM	#3
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: Tach Gauge Problems '05 2500HD how many miles on it i how gm did an 8 year 80,000 mile warranty onthe gages __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

08-16-2010, 07:36 PM	#4
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: Tach Gauge Problems '05 2500HD btw dorman now makes replacements that are plug and play they put your mile in and everything __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

08-16-2010, 08:12 PM	#5
JohnC Registered User Join Date: Feb 2009 Location: Oklahoma Posts: 7,461	Re: Tach Gauge Problems '05 2500HD I've had mine replaced/repaired twice. Nice to see that Dorman is selling a replacement. Hopefully it's cheaper than the $250 price tag to have it repaired.

08-16-2010, 09:52 PM	#6
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: Tach Gauge Problems '05 2500HD the core charge is 300.00 on its own __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

08-17-2010, 03:08 PM	#7
JohnC Registered User Join Date: Feb 2009 Location: Oklahoma Posts: 7,461	Re: Tach Gauge Problems '05 2500HD Ouch! Then I guess having mine repaired for $250 wasn't too bad then considering. Still hated to shell it out though.



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