75gmck25's latest activity
-
75gmck25 replied to the thread Turn signal switch.When I bought a new turn signal switch the wiring connector on the end had "almost" the right spacing. However, I couldn't get all the... -
75gmck25 replied to the thread Smoking Ground Wire.Start with the dash cluster. There should be a black ground wire up high under the dash. On an '87 I think there is a ground bus it...
-
75gmck25 replied to the thread exhaust question, heat riser valve connections.There is a flat gasket with 3 holes on the manifold side, and a donut gasket to mate with the exhaust pipe. My pipes had a slight flare...
-
75gmck25 replied to the thread Faulty rigged.My truck had a dealer-installed aux tank and it looked just like the square one in your picture. I got a factory tank, solenoid, hard...
-
75gmck25 replied to the thread Mechanical fuel pump return line.If that 2nd metal line ends very close to the fuel pump, then is probably the fuel return line. The picture I attached shows my...
-
-
75gmck25 replied to the thread TRC Actuator and Air Conditioning Solenoid Question.My ‘75 has no solenoid to increase the idle with A/C on (factory A/C and no evidence it ever had a solenoid) and it does not cause any...
-
75gmck25 replied to the thread Transmission or rear diff?.They are probably 4.56 gears. 4.10s were also common in the 3/4 tons with the same axle, so a swap should be easy, and you may be...
-
75gmck25 replied to the thread Starter and Alternator wires.Your truck is probably wired exactly like my '75 and Rick1966's '75. One quirk is that you may have an extra wire on the starter that...
-
75gmck25 replied to the thread Carb replacement recommendation?.The Edelbrock AVS2 gets a lot of good reviews for easy setup and good street manners. It is available in 650 or 800 cfm, and your...
-
75gmck25 replied to the thread Starter Wiring Issues.The '73 is wired a little differently than later trucks because it has points (not HEI) and it has an ammeter in the dash. 1. large...
-
75gmck25 replied to the thread Emissions question.The GVW vs emissions rules changed over the years. My ‘75 with 8400 GVW had no factory catalytic converters and very minimal emissions...
-
75gmck25 replied to the thread Replacing turn signal switch in 75 High Sierra.I did this job on my '75 GMC several years ago, and I don't remember how far you had to tear into it to get to the turn signal switch...
-
75gmck25 replied to the thread LMC AC controller has too many detents.I have not found a source for the vacuum connector attached to the back of the dash switch. Several sources sell the switches, but...
-
75gmck25 replied to the thread The squeaking is getting on my last nerves.I used poly bushings for my cab mounts, and greased them lightly as was suggested. They still squeaked when first installed, but...
