gauges not working - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smokkey1 · 01-08-2004, 04:49 PM

My speedometer, oil, and temerputure gauges are not working the only gauge that is work is the voltmeter so does any 1 know what to look for under the hood are on the tranmission? it's an th400 trans and it's an 90 suburban.

thanks...

Grim Reaper · 01-08-2004, 07:07 PM

Check the ground strap off the passenger side head to the fire wall. You can't see it you have to feel for it. Those symptoms are consistant with that strap being left off when the engine or heads have been pulled.

smokkey1 · 01-08-2004, 09:04 PM

Quote:

Originally posted by Grim Reaper
Check the ground strap off the passenger side head to the fire wall. You can't see it you have to feel for it. Those symptoms are consistant with that strap being left off when the engine or heads have been pulled.

thanks i'll check it out....

Blue Beard · 01-08-2004, 11:49 PM

Also check to see if there are straps for both sides.............and sometimes at the frame.........

smokkey1 · 01-09-2004, 02:42 PM

well the engie was rebuild a couple of years ago. the speedometer and the obometer stoped working about a week ago or so. the oil gauge(0-60) stays way past 60 all the time and the temperture gauge(100 -220) stays at 100 all the time. the gas and voltmeter gauges sre working fine.someone told me to check the fuse block but theres no fuse for the gauges i'll check the ground strap in an while...

thanks

Grim Reaper · 01-10-2004, 12:16 AM

Speedo should be mechaincal. So it's a seperate problem. There should be a fuse for the gages. I think it listed "dash", gage or "inst". Check all the fuses. Use a test light and you can test for power on both sides of the fuse without having to pull each fuse.

I think your going to find problems under the hood and not in the truck. It's either that grond strap or it's lost a Fusable link down at the starter. I'm betting the ground strap.

The bolt in to the head is a 3/8's by 1/2 long.

383drvr · 01-14-2004, 02:01 AM

I've got the same problem, no oil or temp. The temp has never worked, but the oil stopped recently. I replaced the oil sender and it started working again. Still no water though...

BTW> How could a fusible link be the culprit?

smokkey1 · 01-14-2004, 09:04 PM

Quote:

Originally posted by 383drvr
I've got the same problem, no oil or temp. The temp has never worked, but the oil stopped recently. I replaced the oil sender and it started working again. Still no water though...

BTW> How could a fusible link be the culprit?

I had a feeling that it might be the oil sender... where is it located???

thanks

383drvr · 01-14-2004, 11:17 PM

On the back of the intake manifold, near the distrubutor. Mine looked sort of like a bell.

smokkey1 · 02-05-2004, 10:57 PM

well the speedometer gauge started working today probably a loose connection some where. and the temperture gauge is working. I finally took it up to the mountains 2 weeks ago and the gauge actually worked I guess the daily driving it does it's only 14 round trip so probably doesn't get an chance to really warm up.

**kwmech** · 02-08-2004, 03:43 AM

---speedo should be mechanical---

Not in a 90s burb they went to a speed sensor

01-08-2004, 04:49 PM	#1
smokkey1 Land Beast Join Date: Nov 2003 Location: Los Angeles Posts: 134	gauges not working My speedometer, oil, and temerputure gauges are not working the only gauge that is work is the voltmeter so does any 1 know what to look for under the hood are on the tranmission? it's an th400 trans and it's an 90 suburban. thanks... __________________ 90' GMC 1 Ton Suburban

01-08-2004, 07:07 PM	#2
Grim Reaper Registered User Join Date: Jul 2001 Location: Atlanta GA Posts: 1,704	Check the ground strap off the passenger side head to the fire wall. You can't see it you have to feel for it. Those symptoms are consistant with that strap being left off when the engine or heads have been pulled. __________________ Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project

01-08-2004, 11:49 PM	#4
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	Also check to see if there are straps for both sides.............and sometimes at the frame......... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

01-09-2004, 02:42 PM	#5
smokkey1 Land Beast Join Date: Nov 2003 Location: Los Angeles Posts: 134	well the engie was rebuild a couple of years ago. the speedometer and the obometer stoped working about a week ago or so. the oil gauge(0-60) stays way past 60 all the time and the temperture gauge(100 -220) stays at 100 all the time. the gas and voltmeter gauges sre working fine.someone told me to check the fuse block but theres no fuse for the gauges i'll check the ground strap in an while... thanks __________________ 90' GMC 1 Ton Suburban

01-10-2004, 12:16 AM	#6
Grim Reaper Registered User Join Date: Jul 2001 Location: Atlanta GA Posts: 1,704	Speedo should be mechaincal. So it's a seperate problem. There should be a fuse for the gages. I think it listed "dash", gage or "inst". Check all the fuses. Use a test light and you can test for power on both sides of the fuse without having to pull each fuse. I think your going to find problems under the hood and not in the truck. It's either that grond strap or it's lost a Fusable link down at the starter. I'm betting the ground strap. The bolt in to the head is a 3/8's by 1/2 long. __________________ Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project

01-14-2004, 02:01 AM	#7
383drvr Registered User Join Date: Oct 2003 Location: Dallas, Tx. Posts: 308	I've got the same problem, no oil or temp. The temp has never worked, but the oil stopped recently. I replaced the oil sender and it started working again. Still no water though... BTW> How could a fusible link be the culprit?

01-14-2004, 11:17 PM	#9
383drvr Registered User Join Date: Oct 2003 Location: Dallas, Tx. Posts: 308	On the back of the intake manifold, near the distrubutor. Mine looked sort of like a bell.

02-05-2004, 10:57 PM	#10
smokkey1 Land Beast Join Date: Nov 2003 Location: Los Angeles Posts: 134	well the speedometer gauge started working today probably a loose connection some where. and the temperture gauge is working. I finally took it up to the mountains 2 weeks ago and the gauge actually worked I guess the daily driving it does it's only 14 round trip so probably doesn't get an chance to really warm up. __________________ 90' GMC 1 Ton Suburban

02-08-2004, 03:43 AM	#11
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,393	---speedo should be mechanical--- Not in a 90s burb they went to a speed sensor



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