20 Most Recent 2002 GMC Envoy SLT Questions & Answers

the c0236 is you have lost the rear sensor signal ... check grounds and all other connections to the ECBM. [under driver seat.] possible the ECBM is bad / top electrical portion or if live in rust /salty belt abs sensor harness -housing -connectors can be damaged or corroded --- https://www.obd-data.com/c0236.html https://www.engine-codes.com/c0237_chevrolet.html

I assume you mean the transmission oil dipstick - under the hood near the firewall beside the heater box. The motor oil dipstick is nearby.

Yes, you may be able to, but we do not know where you might do so. Call around. Know that, if the washers are standard equipment, you may be hard pressed to find a grille with out them. Another option. If you do not want the holes, find a couple of tiny chrome plated screws and insert them in the holes. The screws or bolts, whatever you can find, could be plastic or chromed metal. God bless your efforts.

GMC Envoy 2002 to 2009 Service Workshop Repair manual for the easy solution download the pdf file

Fuse # 23 is for the ETC - electronic throttle control an that system is what causes reduced power mode . Don't wiggle the fuse .an then it won't take B+ voltage from the throttle control system . Is the fuse box where it plugs into burnt looking , high resistance will cause that . Does the fuse fit tight in it's socket ? If not spread the contacts so it does . If it doesn't do it unless you wiggle it , leave it a lone !

Check for broken/cracked wiring in drivers door where wiring exits the door and enters the vehicle. Usually contained in rubber sleeve that may need to be opened for inspection. The wiring flexes constantly with the opening/closing of the door and can break

Check the wires, they could be frayed.

Bank 1 sensor 1 O2 sensor showing low voltage. Check for vacuum leaks first, then replace the O2 sensor if there are no leaks.

It sounds like you have a grounding issue somewhere. Look up a fuse diagram for the cabin fuse panel. Start from there.

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.