20 Most Recent
2006 GMC Envoy XL Denali Questions & Answers
Slow 1-2 shift
I service or change trans fluid on all vehicles, every 2 to 3 years
max, or they will fail for a fact
You do not flush a trans,too much work & lines are disturbed
Your asking for trouble removing coolant lines,flushing lets fine
debris into solenoids & changing all the fluid sometimes makes them slip, because you never changed the fluid every 25,000 or
3 years, max
(50 years experience & former trans shop owner)
May have to remove the valve body & clean, if the 1-2 shift
valve is sticking or a solenoid is bad
Your probably very close to bad news on that trans
8 years with no fluid change is a death sentence
What does air suspension consist of
Air actuators (air chambers) on each corner of the vehicle, a compressor to inflate the actuators, ride height sensors and a control ecu to control the function. That's a basic overview, hope it helps
I have an 06 gmc envoy denali xl and i'm having a rear end saggin
There is a bulletin for this problem.You have to go to the dealership and have the air spring sensor calibrated.Only the dealers can do this calibration.It does not take long to calibrate a vehicle.Unless they find a different problem.Hope this helps.Good luck.
Getting code C0292 lost communication with Engine Control System any ideas on a fix! 2004 GMC Yukon Denali XL
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.
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