Isolation relay
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Senior Member

Joined: Oct 1999
Posts: 762
Likes: 5
From: Brooklyn, NY, USA
Car: Trans Am
Engine: 350
Transmission: 700R4
Isolation relay
Okay, I need the isolation relay for my 83 Trans Am. I went to the local GM Dealer parts counter and they say they don't have an isolation relay listed. I explained there are three relays in the system. Two Actuator relays and one isolation relay. He thought I had five heads. Anyway I asked him to print out the parts diagram from the GM computer system. It is shown below. I don't have the old relay, so I don't have a part number. He says he can't help me without the part number or identifying it on the diagram. I seached the electronics board and read all the messages related to isolation relay, and there are lots of us who need it (the part number), but no one yet who has posted it. Let's finally get this part number posted or identified. The GM parts guy said a corvette owner asked for the same thing, but couldn't help him. So here is the current diagram from GM for an 83 Pontiac Firebird. I know the relay mounts on the right side, but this is the only diagram (left side) in the GM computer system. Could it be #59? PLEASE HELP ASAP.
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1983 T/A LG4 w/T-tops
Rebuilt/Modified E Q-jet
Custom Dual Ram-Air
Self painted cherry red w/ restored black/grey interior
Dynamat from firewall to tail wall
Welded Comp Eng SFC
Tokico Struts/Shocks
Hotchkis LCAs and Panhard Bar
Energy Suspension bushings all around
[This message has been edited by Nightcruzer (edited June 06, 2001).]
------------------
1983 T/A LG4 w/T-tops
Rebuilt/Modified E Q-jet
Custom Dual Ram-Air
Self painted cherry red w/ restored black/grey interior
Dynamat from firewall to tail wall
Welded Comp Eng SFC
Tokico Struts/Shocks
Hotchkis LCAs and Panhard Bar
Energy Suspension bushings all around
[This message has been edited by Nightcruzer (edited June 06, 2001).]
Thread Starter
Senior Member

Joined: Oct 1999
Posts: 762
Likes: 5
From: Brooklyn, NY, USA
Car: Trans Am
Engine: 350
Transmission: 700R4
Okay I expanded my seach to all of thirdgen.org topics and found part numbers that were posted by johns84bird in December of 2000. They are as follows:
"There are 3 relays. 1 isolation relay part #10022620, 2 actuator relays part #10031018."
I went back to the dealership with these numbers and they both come up as ACTUATOR relays. Can someone please verify these number for me? PLEASE.
[This message has been edited by Nightcruzer (edited June 07, 2001).]
"There are 3 relays. 1 isolation relay part #10022620, 2 actuator relays part #10031018."
I went back to the dealership with these numbers and they both come up as ACTUATOR relays. Can someone please verify these number for me? PLEASE.
[This message has been edited by Nightcruzer (edited June 07, 2001).]
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