Question about 2004 GMC Envoy SLT

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Where can i go online and find a wiring diagrams 2004 GMC Envoy SLT 4.2L engine controls 1 of 4?

I need to know which wires is the signal that connect to the crankshaft position sensor and the signal wire that connect to the coils and camshaft position sensor i can use a test light to check for a signal.

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3 Answers

How does the crankshaft position sensor operate what is it Job to do? and how do i test the injectors for pulsa with a noid light where are the injectors located on this vehicle?


The crank sensor is needed for the coils to fire. It is on the drivers side, mounted in the engine block back by the transmission. The injectors are under the plenum. The plenum wraps around them. I wouldn't worry about them right now. And your probably right about being flooded. I would throw new plugs in it when you replace the sensor.

Dec 11, 2016 | 2004 GMC Envoy SLT

1 Answer

Where is the purge control solenoid and powertrain relay located on 2004 Envoy SLT 4.2L?


Powertrain relay ? Maybe you mean IGN 1 relay ? This supplys B+ power to the coils . relay # 58 in the under hood fuse box .
Is there B+ voltage at the coil's pink wire ?
Evaporative Emission (EVAP) Canister Purge Solenoid (LL8)
On the left side of the engine block
Engine Controls Component Views in Engine Controls - 4.2L
Engine Controls Connector End Views in Engine Controls - 4.2L
Evaporative Emission (EVAP) Canister Purge Solenoid (LM4)
On top of the engine, toward the front
Google picture of solenoid so you know what your looking for .

Dec 04, 2016 | 2004 GMC Envoy SLT

1 Answer

Do a 2004 Envoy SLT 4.2L have a Ignition Module?


Crankshaft position sensor,cam sensor . your vehicle should have coil on plug , a coil at each spark plug !
Ignition Coils
Each ignition coil has an ignition 1 feed and a ground. The PCM supplies an ignition control (IC) circuit. Each ignition coil contains a solid state driver module as its primary element. The powertrain control module (PCM) signals the coil driver to initiate a firing event by applying a signal to the IC circuit at the appropriate time. When the signal is removed, the coil fires the spark plug. The spark plugs are tipped with platinum for long wear and higher efficiency.
During normal operation the powertrain control module (PCM) controls all ignition functions. If either the crankshaft position (CKP) or camshaft position (CMP) sensor signal is lost, the engine will continue to run because the PCM will default to a limp home mode using the remaining sensor input. As mentioned above, each coil is internally protected against damage from excessive voltage. If one or more coils were to fail in this manner, a misfiring condition would result. Diagnostic trouble codes are available to accurately diagnose the ignition system with a scan tool.
If a crank sensor is replaced a Crankshaft Position System Variation Learn must be done and a scan tool is need to do this.

Nov 30, 2016 | 2004 GMC Envoy SLT

1 Answer

Do a 2004 GMC Envoy Slt 2.4L have a ignition module?


correction this is a 4.2L not a 2.4L
Do a 2004 GMC Envoy Slt 2.4L have a ignition module?
The engine will turn but want start no spark at the spark plugs boot what could be the cause no spark? AmanStino 3 USB ports Car charger with 1 Type port AmanStino

Nov 29, 2016 | GMC Cars & Trucks

1 Answer

2004 ENVOY WHERE IS MODULE RESISTOR


2002 - 2009 GM BLOWER MOTOR RESISTOR - YouTube

? 4:17
https://www.youtube.com/watch?v=WWi-_-kY-dM
Sep 5, 2012 - Uploaded by davesgarage512
I have a 2003 GMC Envoy and my issue is when I shut the blower off it still ... Can this issue also be remedied ...

2004 GMC ENVOY Blower Motor Control Module / Resistor



Nov 28, 2015 | 2004 GMC Envoy SLT

1 Answer

2004 GM 4.2 6L engine wiring diagram


either go on line internet look up engine wire diagram or buy a gm factory manuals they not cheap cost $198.00 or let dealership look up your engine wiring diagram.

Sep 09, 2012 | 2004 GMC Envoy

1 Answer

Can you tell me what the firing order is when looking at the motor of a 2005 GMC Envoy SLT 4.2?


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.

Sep 12, 2011 | GMC Envoy Cars & Trucks

2 Answers

2003 gmc envoy slt both power seats stop working


Check fuse --if blown -replace. Posibly wiring connector under seat unplugged.

Feb 04, 2011 | 2004 GMC Envoy

1 Answer

Veh wont start


by looking at the wiring diagram for your truck. the pcm1 fuse only feeds the pcm so most likely it is a grounded wire between the fuse block and pcm. follow the wire harness closely between the two and see if its grounded somewhere. also try disconnecting the pcm and see if the fuse still blows. that would isolate the problem to the wiring. it is highly unlikely that the pcm would cause the problem.

Nov 27, 2008 | 2004 GMC Envoy

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