20 Most Recent 2008 GMC Envoy Denali Questions & Answers

Turn signal switch or the bulb. Check both

Under the drivers seat.

Did you override the security system with security module if not you will have to do that it is a separate module that you will need

Not sure about some of the codes you have but looks like you may have traction control / stability control issues. The C code is a chassis code and they are really unusual. You may want to have those codes done again because my machine does not list body codes for some of those numbers. P codes yes, B codes no. But just a comment. If you ran this vehicle with all the wheels off the ground (on a lift) you will get every kind of weird code and light you can imagine. The traction control and stability control computers are very sensitive to issues that don't make sense to them. Running with all four wheels off the ground makes them really confused.

rough guess is that there is a connection that is not properly connected

Your problem is probably your actuator switch in the front differntial. it is an electronic switch and they sometimes stick or burn out .1A auto parts .com shows how to remove it on u tube . you remove an elector connector and than the switch un screws. sometimes easy but I have had to heat them with a torch to get them out. Go to google type in how to remove actuator switch chevrolet . it should bring up the video. I beleve this will solve your problem if this was helpful please leave good feed back

well if they were replacesd not that long ago . take back to garage and see if they need to treak it a bit . sometimes they need adjusted or treaked a bit . you more than likly drove enough to have them seated but might be 1 or 2 lifters that just need that extra turn now . this is what it sounds like hopefully it is just this and not the crankshaft or pistons and bearings . . let me know how it goes .

look goto autozone they have a all in connector for towing so much me easer about 40 dollars you go back to driver side rear harnes when you unplug it the pig tail joins all connectors to geather along with your traller pig tail no mus no fus

I am guessing it is still under the factory warranty. Take it to the dealership and have them fix it for free.

How to install a seatbelt in a 2007 GMC envoy in the passenger side

Might be a short in the wiring in the column or the horn pad.Or in the engine compartment.

try changing out the PCM. its responsible for transmission operation. bad PCM means dumb transmission.

Firing order is 1, 5, 3, 6, 2, 4. Number 1 cylinder is up front. Why would you need the firing order, this engine does not have plug wires, each plug has its own coil pack, each coil pack is controlled by the computer.

I did the procedure vehicle still didn't start.I did notice the security light did no blink but stayed solid before it when out.Im lost ..

There are two O2 sensors, one on the exhaust manifold on the right side (passenger side) of the engine, and one just after the catalytic converter.

Picture would be perfect.

Your drive train may be in limp mode, which indicates something seriously wrong with it (engine or transmission). Check for trouble codes with a code reader.

Google your question. About 280,000 results (0.61 seconds) https://www.autozone.com/repairguides/S-T-Series-Blazer-Bravada-Envoy-Jimmy-Rainier-Trailblazer-Xtreme/Component-Locations/Secondary-Air-Injection-AIR-Pump-Relays/_/P-0996b43f80cb36eb

Look for black wire. Check it by using an omh meter and testing it to a ground.

Check youtube for video