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Final Update, Trans temp gauge install

99GMCZ71

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99GMCZ71 Enthusiast

99GMCZ71

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Well, after several weeks, I finally got the Trans temp gauge kit from US Speedo working. Just a quick recap, I installed the Trans Temp gauge kit from US Speedo and the gauge would not work. Talked to US Speedo and they said there might be more to it than just installing the gauge kit, which includes a IC chip, transistor and jumpers to be soldered on the circuit board, plus the gauge and overlay of course. They sent me 2 different circuit boards to try, and although everything worked right with their circuit boards the air bag light stayed on. Which must mean those boards were from a 2000 to 2002 truck. A known problem for us 99 guys. So I finally sent them my board and they had to reprogram the circuit board. Now everything works perfect. So if you want to add the trans temp gauge to your 99 (not sure about other years) you can do it, but it will have to be sent to US Speedo or another speedometer shop for programming. I would also like to thank James at US Speedo for his help. They are one excellent place to deal with. I wish all companies were like that :fume:

12secSS Enthusiast

12secSS

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Any pictures? Does it go on the left lower portion of the dash? Sorry I am new to the 1999+ GM trucks, just acquired one recently myself. I am looking at adding a vacuum gauge and trans temp gauge to my Sierra. Thanks!

99GMCZ71 Enthusiast

99GMCZ71

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Any pictures? Does it go on the left lower portion of the dash? Sorry I am new to the 1999+ GM trucks, just acquired one recently myself. I am looking at adding a vacuum gauge and trans temp gauge to my Sierra. Thanks!

 

 

 

Yes looks like factory gauge in 2500 series trucks. No pics sorry.

budhayes3 Senior Enthusiast

budhayes3

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Glad to hear that you got it working! Just curious...about how long does it take for your guage to start moving and how far have you gotten the needle? I just installed a Denali cluster about a month ago, and I'd like to compare with others. I've gotten mine almost up to 200*, but it usually runs around 150* on the highway. Takes a while to heat up too.

 

sorry if I hijacked your thread

99GMCZ71 Enthusiast

99GMCZ71

Posted
  • Author
Posted
Glad to hear that you got it working! Just curious...about how long does it take for your guage to start moving and how far have you gotten the needle? I just installed a Denali cluster about a month ago, and I'd like to compare with others. I've gotten mine almost up to 200*, but it usually runs around 150* on the highway. Takes a while to heat up too.

 

sorry if I hijacked your thread

 

 

 

My needle starts to move after about 10 to 15 minutes of driving. It usually stays right around 150* but has gone a little higher in heavy stop and go traffic. It's never gotten to 200*, but I have not towed anything since the gauge install.

budhayes3 Senior Enthusiast

budhayes3

Posted
Posted

Cool, thanks 99GMCZ71, sounds like mine is just about where yours it at. The only time it went close to 200*, it was over 90*, humid, in traffic with AC on.

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