20 Most Recent 1985 GMC Rally G2500 Questions & Answers

Carburetor or fuel injected? I'm guessing carburetor but want to be sure.

Its the white wire and no the brake pedal is not grounded to the vehicle.

it is usual in the bottom of the head rest if not it would be right where the bar is u push it in and it will let it slide out

Thought there were 2 big phillips head screws that held the handle on,from the bottom,also ,check the wiring inside the rubber boot,between the door and the body,just slit it with a razor blade,wires tend to break in there.

i got 3 bleeding valve on my car 1 on top of the pump 1 at the back on top of the thermostat and 1 on the left side of the radiator

On top of the brake pedal assembly under the drivers side dash please rate

check for kinks in the outer cable ,also its in teh square drive at each end correctly

If the voltage was measured at the starter terminals and the starter motor spins, check if there is voltage going to the plugs. Pull out the hi-tension wires from the engine and put it over the block and see if you get a blue arc for each of the cylinders. If you are getting good arcs inspect if you are getting fuel into the cylinders. You are most likely using carbs, check if you are getting fuel to it. Otherwise inspect the line and if you are using a fuel pump check if you are getting fuel to the fuel filter when you have the key to the run position or when starting. You may also just need to replace the fuel filter if ever it is dirty. Check the wiring for loose connections especially ground wires.

Temp sensor is on intake manifold, check for lose or chaffed wire

the warning light on the dash relates to the lambda probe(o2 sensor)failure,easy to fit.

Firing order 1.3.4.2

There is a horseshoe shaped clip that is on the back of the window crank handle.  There is a special tool you can buy to slide behind it and remove it or you can pry out gently on and using a small screwdriver or pick you can pop the clip off.  You may need a flashlight to see it but it is quite simple to remove.  Turn the handle until you can see the open side and just push on it with the screwdriver and it will pop off - watch for it as it is easy to loose.  To put it back on put the clip on the handle first then just push it on the shaft.  If you do happen to lose it you can buy them at NAPA

Good place to get a vacuum gauge hooked up and identify problems using that tool. Without the gauge, check your exhaust and see how much if passing through the converter. You can do this by testing the temperature of the exhaust before and after the converter making sure the converter/exhaust isn't restricted. As the vehicle warms up a bad converter can cause the symptoms you are describing.

P1860 = TCC PWM Solenoid Circuit Electrical P0740 = Torque Converter Clutch Circuit/Open and P0785 = Shift Timing Solenoid "A" Maybe spurious codes, I can't tell.

Welcome. Two O2 sensors. One in the exhaust manifold and another after the cat. Feb 9, 2010

How many O2 sensors are there?

trailvoy.com https://www.trailvoy.com > ... > Exhaust Mods

How Many O2 Sensors Are on This Vehicle?

2CarPros https://www.2carpros.com > ... > Location Dec 27, 2021 - Hello, this vehicle has two oxygen sensors, the rear one is behind the Catalytic Converter. Below is a picture of its location to the right side . ..

The fuel filter for the 2009 Acadia is built into the fuel pump. To replace it, the pump will have to be replaced.

7/8" Oxygen Sensor Socket or Wrench and one electrical plug. https://www.freeautomechanic.com/ho2s-heated-oxygen-sensor.html