2007 GMC Envoy Denali - Answered Questions & Fixed issues

Should on the inside of the frame underneath the vehicle

There is a recall for the master switch, call the dealer and give them your VIN #.

Door open chime? Mayhem defective door switch

Could be crank or cam sensor

The switch goes bad with time. Replace it.

There is a level sensor connected to the lower control arm on the rear wheel on the drivers side. This operates the pump and lets air out if it is too high in the back.It can fail. Most likely the air pump has gone bad. Expect 800 + to fix it.

Depends on where it is located. If its on the drive shaft for the rear wheels the cost will be lower than the ones on the front wheels. Shop around. Drive line shops specialize in them but any good mechanic can do it.

Run a diagnostic test to show what codes come up. That will identify the reason the engine light came on. It will also reset the light.

Check the light switch, fuse, relay and the wiring to the bulbs. Don't forget the ground wires either.

Fuel sender is in the gas tank. You'll need to let the tank down in order to replace the sender.

Relay is stuck or the head light switch itself is bad

Evap Emission High Purge Flow Fault. This means that the carbon cannister under the hood that collects fuel tank vapors is no longer operating. You won't pass smog until it's fixed.

Are you sure you replaced the correct wheel bearing?

Usually Kurt there will be a bracket on the tube that secures it to the engine block. Undo the fastener that secures the tube and gently pull upwards while rotating the tube out of it's press fitting. To install a new tube or when replacing the old one...select a box wrench that is just a little bigger than the tube diameter and slide it down to the bottom of the tube until it is pressing against the seating flange. Make sure the alignment of the bracket is close to where you want it to be and then gently tap on the edge of the box wrench to seat the tube. A long handled screw driver helps in tight quarters. Secure with fastener.

Module , motor on the T case, or wiring. Codes need read.

The T PARK fuse in the rear fuse-relay block supplies battery positive voltage to a separate park lamp circuit connected to the trailer wiring harness.. For trailer wiring, separate turn signal circuits are connected through the GMSF to the trailer wiring harness. Fuse Block - Rear Beneath the left rear seat Trailer TR/PARK fuse 42 10amp

HEADLIGHT SWITCH

Definition of Diagnostic Trouble Code P1400 Audi: EGR Valve Circ Electrical Malfunction BMW: Heated Catalyst Battery Voltage or Current too Low during Heating (Bank 1) Chrysler: Manifold Differential Pressure Sensor Circuit Malfunction Dodge: Manifold Differential Pressure Sensor Circuit Malfunction Ford: Differential Pressure Feedback EGR Circuit Low Input Hyundai: EGR System Monitor Malfunction Infiniti: EGRC Solenoid/V Jaguar: Exhaust Gas Recirculation Valve Position Control Jeep: Manifold Differential Pressure Sensor Circuit Malfunction Lexus: Sub-TPS Malfunction Lincoln: Differential Pressure Feedback EGR Circuit Low Input Mazda: DPFE Sensor Circuit Low Input Mercedes: EGR Switchover Valve Malfunction (C230 Only) Mercury: Differential Pressure Feedback EGR Circuit Low Input Mitsubishi: Manifold Differential Pressure Sensor Circuit Malfunction Nissan: Differential Pressure Feedback EGR Circuit Low Input Subaru: Fuel Tank Pressure Control Solenoid Circuit Low Input Toyota: Sub-Throttle Position Sensor Malfunction Volkswagen: EGR Valve Circ Electrical Malfunction

Hi there;

Here is the wiring diagram for the trailer wiring for your truck.

Hope this helps
Farrout!

May be code there, you just can\'t get them with acode reader,you need professional software & gointo the correct moduleCould be may thingsDrive it ten miles or more like that & you can ruin itSo park it until diagnosed & resolvedIf nothing else, all it takes is never changing the fluidfrom the time it was new, & doing so every 3 yearsIf not done it is a death sentence for any transChanging it now won\'t fix a thing,fluid is changed becauseit breaks down from heat