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What are I/M monitor status and freeze frame data how do it operate?

When i plug my Innova scan tool 3040c into the 2004 GMC Envoy SLT 4.2L and turn the key on retrieve vehicle data come up on the screem what is it for i don't quite understand them and what to do with them? could it be part of the problem

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1 Answer

How do i test a coil over plugs with a multimeter?


the problem is before the coils
check cam and crank position sensors for operation
check that the timing belt /chain is not broken
check immobilizer is operational
run the fault codes first

Jan 14, 2017 | Cars & Trucks

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

2 Answers

2005 Gmc Sierra 5.3 litter SLT. Wire diagram for passanger side power window. No power to door.


Do the power door locks work for that door ? Does you vehicle have door courtesy lights , turn signals on the mirror ? If your vehicle has these other options an they work , you have power to the door . There is an electronic module inside the door ,called passenger door module ! where did you check for power at , the window switch ! These are computer controlled an you would only see a few volts when pushing the switch !

7

  1. Monitor the passenger front window status in the passenger door module inputs list.
  2. Activate the passenger power switch on the passenger door module in the up and down positions.
Does the window status data parameter change accordingly?
Go to Step 8
Go to Step 15

8

  1. Monitor the passenger front window status in the driver door module inputs list.
  2. Activate the passenger front power window switch on the driver door module in the up and down positions.
Does the window status data parameter change accordingly?
Go to Step 9
Go to Step 16
Operate the passenger front power window in the UP and DOWN directions from the master switch.
Does the passenger front power window operate properly from the master switch?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 5

4

  1. Install a scan tool.
  2. Monitor the window lockout data parameter in the driver door module inputs list.
  3. Activate the window lockout switch to both the On and OFF positions.
Does the window lockout data parameter change state appropriately?
Go to Step 5
Go to Step 16
Your best bet is to take this to dealer or a ASE certified repair shop.

Jun 14, 2015 | GMC Cars & Trucks

1 Answer

I removed and cleaned the EGR valve and ran for about 5 days, then took it to my mechanic friend, he check it with his system and gave me the result: EGR and the rest of other status = complete, except for...


Diagnose the codes you have

Ask the mechanic for an education on
working on OBD2 Systems

Road Test with scan tool & actually see the data
& the Emission Monitors run & look at freeze frame
data when codes are set

Spend some time at the shop with the mechanic

I would have replaced the EGR Valve

Have no idea what you would clean & expect
to work, after many years miles & lots of carbon

Oct 30, 2014 | Cars & Trucks

3 Answers

I have a 2004 Envoy slt 4wd auto....The car will shift fine from 1st to 2nd gear but rpms climb and it does't go to 3rd. I tried to maunually shift through gears, but it still doesn't get 3rd?


its most def a purely transmission issue i believe its the solenoids. have it taken to a reputable trans shop near and have them diagnose it with there speciall code reader.

Oct 24, 2012 | 2004 GMC Envoy SLT

1 Answer

5vz-fe misfire codes


Replace the coil pack.

Dec 26, 2008 | 1999 Toyota 4Runner

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