20 Most Recent 2000 GMC Denali - Page 8 Questions & Answers

THE HEATER AND BLOWER RELAY. IS LOCATED ON THE BLOWER MOTOR HOUSING IN THE PASSENGER COMPARTMENT.ON 1999 THROUGH 2002 MODELS. AND IN THE FUSE RELAY CENTER IN THE ENGINE COMPARTMENT.ON 2003 AND LATER MODELS THE HVAC FUSE IS LOCATED IN THE FUSE RELAY PANEL UNDER THE LEFT SIDE OF THE DASH.

The control may have gone bad... You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. Then you can disconnect the controls and test them

Your fuel filter is located under the RH frame rail and it shouldn't be to hard to replace. You might wanna check your fuel pump pressure too.

You may have an issue with the MAP sensor if this is an EFI engine. This part of the car dictates the fuel that is injected into the cylinders. It could be faulty. You may also want to check the fuel supply for your car. You car may not have the correct supply of fuel if the fuel filter is clogged and needs replacing. This can be true to carbs and EFI engines alike. For EFI you may also want to check the fuel pump if it provides constant supply of fuel. It may be weak and may not provide the correct amounts of fuel during acceleration.

For carbs, you may want to check for leaks in the vacuum hoses and the jets if they need cleaning.

this is for eng misfire cylinder # 3 misfire try tune up

take off the rear tires and the drums. there is a cable at the bottom of your wheel bearing assembly, thats your emergency brake cable. try to push and pull it. follow the line up the side of the car and try to push and pull as far as you can. you may also be able to spray it with pb blaster to break it free from the dirt and corrosion

Right beside the oil filter.

the headlight switch assembly is more than likely at fault

sounds like a dealer only job ,digital signature and factory computer needed,but i could be wrong.does it have an accident cut off switch,because when it ran out of gas it might have jerked about and activated the cut out switch.ps whats a denali??never seen one in spain is it like an astra ??or vectra

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

The C0292 code in your 2004 GMC Yukon Denali XL indicates a communication issue between the Powertrain Control Module (PCM) and the Electronic Brake Control Module (EBCM). Here are some steps to diagnose and potentially fix the problem: Check Ground Connections: Inspect the ground connections related to the PCM and EBCM. Follow the ECM ground and ABS module ground. Check the ground on the firewall (driver's side) and the frame rail under the driver's seat. Also, verify the engine ground on the driver's side. Inspect Wiring and Connectors: Visually examine the wiring harness and connectors associated with the EBCM. Look for any signs of damage, such as broken wires or corroded pins. Ensure that the connector pins are not bent or pushed out. Pay attention to any loose or poor electrical connections. Consider the Tune: If you've recently modified the vehicle's tuning, consider reverting to a different tune. Sometimes, a specific tune can cause communication issues. If you suspect the tune, contact the tuner for further guidance1. Professional Diagnosis: If the above steps don't resolve the issue, it's advisable to seek professional help. A qualified mechanic can perform a thorough diagnosis using specialized tools. Keep in mind that diagnostic costs typically range from $75 to $150 per hour.

It is not legal to 'adjust' speedometers. Fit the correct sized rims and tyres and the speedometer reading will be correct or use a satnav for real time speed.

The BCM is located on the lower left side of the dashboard just below the steering column

Fuel injectors are typically driven directly by power transistors in the engine computer. Relays are just not fast enough to provide the fine timing control needed. There might be an individual fuse for each injector soldered to the computer board, but I haven't ever looked at one for your model, and I've never seen injectors individually fused. Before chasing that, verify that the electrical resistance of the injector coil is the same as the other injectors. The typical resistance is between 100 and 1000 Ohms. If the coil resistance differs by more than 10%, replace the injector coil (it may be easier to remove the coil from a new injector and switch it with the old one than to pull the entire injector out and replace it, if not, change the injector). Shorts in the coil that lower the resistance are sometimes a problem. Also check the injector cable for continuity. An easy way is with an ohmmeter that can read at least 20 Megohms. First, check the resistance between the terminals on a good cable. You should read a very high resistance - this is the leakage through the transistor and any protective components, and is some number between 5 and 20 megohms. The exact number doesn't matter, as long as you see something and it is not a short circuit (less than 1 Ohm). This verifies that the test will work (if it reads over-range, either your probe tips can't reach the contacts in the connector, or the test is otherwise not valid). Next, repeat on injector 1. If it reads open circuit (over-range), check the injector cable (note: an open fuse will give the same result as a broken wire).

Backfiring can be caused by leaking valves, (compression leak test will show this), an air leak in the inlet manifold, incorrect timing. incorrect mixture or an air leak in the exhaust manifold. Very undesirable as it can lead to engine damage.