Couple if instrument Cluster questions. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Mathew21 · 01-05-2019, 10:28 PM

Two questions

1) I have a cluster out of an 89 Chevy dump truck (Square body). I thought I read somewhere that 89 cluster's are different then 81-87. Can anyone clarify that for me.

***This is not the 1989 Cluster pictured below.***

2) Does anyone know what year or years this cluster should fit?

Gotenntitans · 01-05-2019, 10:36 PM

Looks like a 73+ cluster to me. Not sure when the instruments changed over, but my 87 is different than the one pictured. I'm sure you'll get an accurate reply later.

**Wgesnerjr** · 01-06-2019, 12:40 AM

It will "fit" or bolt up in any year. However, the font on gauges changed to fatter letters/digits in the early 80s. Also the pinout on the connector changed over the years and as far as gauges vs. no gauges. I know the Suburbans got electric Speedos in 1991. Some of the earlier 70s had mechanical vs. electrical oil gauges and ampmeter vs. volt meter.

**hatzie** · 01-06-2019, 03:33 AM

That's a 77, 78, or 79 instrument cluster.
They went to 85 mph speedometers when the NHTSA mandated it in September of 1979.

Mathew21 · 01-06-2019, 09:27 AM

Quote:

Originally Posted by hatzie

That's a 77, 78, or 79 instrument cluster.
They went to 85 mph speedometers when the NHTSA mandated it in September of 1979.

Thanks everyone for the answers. I couldn't remember when they stopped making the 100 mph.

b454rat · 01-06-2019, 04:43 PM

it has volts and electric oil pressure so would be late 70s. Earlier ones have amps and mechanical oil gauge.....

01-05-2019, 10:28 PM	#1
Mathew21 Registered User Join Date: May 2010 Location: Clinton township, MI Posts: 1,192	Couple if instrument Cluster questions. Two questions 1) I have a cluster out of an 89 Chevy dump truck (Square body). I thought I read somewhere that 89 cluster's are different then 81-87. Can anyone clarify that for me. *This is not the 1989 Cluster pictured below.* 2) Does anyone know what year or years this cluster should fit? Attached Images __________________ It only has original paint once

01-05-2019, 10:36 PM	#2
Gotenntitans Registered User Join Date: Aug 2013 Location: Camden, Arkansas Posts: 984	Re: Couple if instrument Cluster questions. Looks like a 73+ cluster to me. Not sure when the instruments changed over, but my 87 is different than the one pictured. I'm sure you'll get an accurate reply later. __________________ GoTennTitans 1987 GMC Sierra 1990 GMC Sierra (stolen) 2003 Chevy Silverado

01-06-2019, 12:40 AM	#3
Wgesnerjr Senior Member Join Date: Jun 2015 Location: Atlanta, GA. Posts: 737	Re: Couple if instrument Cluster questions. It will "fit" or bolt up in any year. However, the font on gauges changed to fatter letters/digits in the early 80s. Also the pinout on the connector changed over the years and as far as gauges vs. no gauges. I know the Suburbans got electric Speedos in 1991. Some of the earlier 70s had mechanical vs. electrical oil gauges and ampmeter vs. volt meter. __________________ Jay Gesner Atlanta, GA 1985 C10 Long Bed 4X2 LS 5.3, 4L60E Father/Daughter Project

01-06-2019, 03:33 AM	#4
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 5,014	Re: Couple if instrument Cluster questions. That's a 77, 78, or 79 instrument cluster. They went to 85 mph speedometers when the NHTSA mandated it in September of 1979. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

01-06-2019, 04:43 PM	#6
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: Couple if instrument Cluster questions. it has volts and electric oil pressure so would be late 70s. Earlier ones have amps and mechanical oil gauge.....



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