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Search: Posts Made By: GeorgeLG
Showing results 1 to 50 of 500
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Forum: 2nd Generation S-series (1995-2005) Tech
Today, 05:15 PM
Replies: 15
Views: 275
Posted By GeorgeLG

Sounds like your on the right track, you'll get...

Sounds like your on the right track, you'll get there.

George
Forum: 2nd Generation S-series (1995-2005) Tech
05-29-2021, 11:56 AM
Replies: 12
Views: 539
Posted By GeorgeLG

The aftermarket question is a loaded one because...

The aftermarket question is a loaded one because there are crappy quality options as well as the OEM version in many cases. When I did a Toyota clutch replacement some years ago I found out that Asin...
Forum: 2nd Generation S-series (1995-2005) Tech
05-26-2021, 10:32 AM
Replies: 7
Views: 212
Posted By GeorgeLG

It does look good. George

It does look good.

George
Forum: 2nd Generation S-series (1995-2005) Tech
05-25-2021, 11:39 AM
Replies: 7
Views: 212
Posted By GeorgeLG

I am imagining the conversation with the detail...

I am imagining the conversation with the detail guy. " My std rate for a mid-size SUV is $150, when can I get started? Today, great can I have the keys? Lets take a look inside and see what we are...
Forum: 2nd Generation S-series (1995-2005) Tech
05-25-2021, 09:51 AM
Replies: 7
Views: 212
Posted By GeorgeLG

You may not need to drop the tank for a gas fill...

You may not need to drop the tank for a gas fill problem. It can be the fill side but can also be the vent side.

Life is always getting in the way, that’s for sure.

George
Forum: 2nd Generation S-series (1995-2005) Tech
05-23-2021, 02:26 PM
Replies: 15
Views: 275
Posted By GeorgeLG

Here are the service manual pages for reference: ...

Here are the service manual pages for reference:

https://cimg6.ibsrv.net/gimg/blazerforum.com-vbulletin/468x640/5_41_f80edea8537b1311c949ebb82df726785ccbfa24.jpg...
Forum: 2nd Generation S-series (1995-2005) Tech
05-23-2021, 09:26 AM
Replies: 15
Views: 275
Posted By GeorgeLG

Are you using a clear hose attached at the wheel...

Are you using a clear hose attached at the wheel caliper bleeding fittings into a jar of brake fluid? Do you get equal flow out of all four calipers?

The ABS modulator as well as the master...
Forum: 2nd Generation S-series (1995-2005) Tech
05-22-2021, 12:53 PM
Replies: 9
Views: 295
Posted By GeorgeLG

A clever way to diagnose a vacuum leak and start...

A clever way to diagnose a vacuum leak and start isolating which line its coming from is to watch fuel trims while the truck is running at idle and your start pinching off lines and branches until...
Forum: 2nd Generation S-series (1995-2005) Tech
05-20-2021, 11:20 AM
Replies: 2
Views: 151
Posted By GeorgeLG

The tank is vented from the tank > sometimes a...

The tank is vented from the tank > sometimes a rollover/check valve at the top of the tank > the tube on the way to the cannister > cannister > the tube to the vent solenoid > vent solenoid. Any one...
Forum: 2nd Generation S-series (1995-2005) Tech
05-19-2021, 11:54 AM
Replies: 0
Views: 157
Posted By GeorgeLG

ODBII Code Scanners for Blazers

When members come here for help with more complicated problems that have many potential causes, we end up asking about trouble codes and live data almost immediately. Anyone doing their own repair...
Forum: 2nd Generation S-series (1995-2005) Tech
05-18-2021, 10:19 AM
Replies: 12
Views: 539
Posted By GeorgeLG

Perfect, thanks. George

Perfect, thanks.

George
Forum: 2nd Generation S-series (1995-2005) Tech
05-17-2021, 04:26 PM
Replies: 10
Views: 267
Posted By GeorgeLG

That relay is in the BBEC (body bussed electrical...

That relay is in the BBEC (body bussed electrical center) which is under the dash to the left of the steering wheel. I do not know how hard it is to get that assembly out to work on the relays. Here...
Forum: 2nd Generation S-series (1995-2005) Tech
05-17-2021, 10:32 AM
Replies: 12
Views: 539
Posted By GeorgeLG

That had some really interesting info and started...

That had some really interesting info and started off as a good read but half way in my brain exploded.

Les - What is your current opinion about best scanners at various price levels including...
Forum: 2nd Generation S-series (1995-2005) Tech
05-16-2021, 06:16 PM
Replies: 12
Views: 539
Posted By GeorgeLG

You can test O2 sensors to see if they are...

You can test O2 sensors to see if they are sluggish and if they are switching properly. You'll need live data graphing.

The post cat sensor should have a steady voltage that moves around slowly...
Forum: 2nd Generation S-series (1995-2005) Tech
05-15-2021, 01:04 PM
Replies: 13
Views: 361
Posted By GeorgeLG

The spec for cam retard is +/- 2 degrees. The...

The spec for cam retard is +/- 2 degrees. The timing for spark advance is controlled by the computer but the cam and crank need to be synchronized. If your off by a few dgrees the you can modify the...
Forum: 2nd Generation S-series (1995-2005) Tech
05-15-2021, 10:05 AM
Replies: 13
Views: 361
Posted By GeorgeLG

What is your cam retard value? George

What is your cam retard value?

George
Forum: 2nd Generation S-series (1995-2005) Tech
05-14-2021, 09:49 PM
Replies: 12
Views: 539
Posted By GeorgeLG

It may take more than one drive cycle to complete...

It may take more than one drive cycle to complete all readiness tests, including some overnights.

Did you also check for pending codes?

Next you could look at a graph of your O2 sensor outputs...
Forum: 2nd Generation S-series (1995-2005) Tech
05-08-2021, 11:37 PM
Replies: 6
Views: 207
Posted By GeorgeLG

There are also grounded shield wires at each end....

There are also grounded shield wires at each end. Near the transmission that shield goes from bare to black and attaches at G117 at the left rear engine compartment. At the PCM that is also bare to...
Forum: 2nd Generation S-series (1995-2005) Tech
05-08-2021, 11:33 PM
Replies: 6
Views: 207
Posted By GeorgeLG

The signal for the speedometer comes from the VSS...

The signal for the speedometer comes from the VSS which is located at the right rear of the transmission with two wires - ppl/wht and Lt Grn/Blk. On a 2WD that pair of wires goes to the PCM in the...
Forum: 2nd Generation S-series (1995-2005) Tech
05-08-2021, 05:14 PM
Replies: 18
Views: 485
Posted By GeorgeLG

That truck is in great shape! Good luck. ...

That truck is in great shape! Good luck.

George
Forum: 2nd Generation S-series (1995-2005) Tech
05-07-2021, 11:35 PM
Replies: 6
Views: 207
Posted By GeorgeLG

The wiring was probably disturbed. Reading the...

The wiring was probably disturbed. Reading the codes can help narrow this down. For instance the fuel tank pressure sender shares a ground with the fuel level sender but if there is no evap codes...
Forum: 2nd Generation S-series (1995-2005) Tech
05-07-2021, 08:51 PM
Replies: 6
Views: 207
Posted By GeorgeLG

So those two gauges worked fine before the...

So those two gauges worked fine before the muffler and brake work was done?

Has more than one source said that your PCM will not interface with an ODBII code reader? Will the connector power on...
Forum: 2nd Generation S-series (1995-2005) Tech
05-04-2021, 06:24 PM
Replies: 3
Views: 262
Posted By GeorgeLG

Also, consider that the investment in labor and...

Also, consider that the investment in labor and welding may not make sense installing a cat of unknown quality and remaining life. That said many after market cats are not up to oem quality levels.
...
Forum: 2nd Generation S-series (1995-2005) Tech
05-03-2021, 10:05 AM
Replies: 3
Views: 262
Posted By GeorgeLG

You can go to rockauto.com and look up part...

You can go to rockauto.com and look up part numbers for related vehicles and see where you have a match.


George
Forum: 2nd Generation S-series (1995-2005) Tech
05-01-2021, 11:11 AM
Replies: 18
Views: 485
Posted By GeorgeLG

Les will take good care of you on your misfire...

Les will take good care of you on your misfire problem so I won’t comment on that.

Regarding the evap system: the entire system is isolated from the engine by the purge solenoid which is normally...
Forum: 2nd Generation S-series (1995-2005) Tech
04-30-2021, 09:14 PM
Replies: 10
Views: 267
Posted By GeorgeLG

So its the glass latch and not the "door" lock?...

So its the glass latch and not the "door" lock? Its the setup where the glass unlatches independently of the door/tailgate/endgate/...?

Does that keyed cylinder also unlatch that glass?

Is it...
Forum: 2nd Generation S-series (1995-2005) Tech
04-30-2021, 06:34 PM
Replies: 10
Views: 267
Posted By GeorgeLG

If its the liftgate glass and not the door lock...

If its the liftgate glass and not the door lock then pull the "endgate or liftgate liftglass relay" in the "body bussed electrical center (bbec), behind the left side of the dash near the ic fuse...
Forum: 2nd Generation S-series (1995-2005) Tech
04-30-2021, 02:18 PM
Replies: 10
Views: 267
Posted By GeorgeLG

After I saw Lannys question I did a deeper dive...

After I saw Lannys question I did a deeper dive and discovered that the wiring diagrams for this truck/year have an additional page and together reference a liftgate, liftglass and/or endgate. I also...
Forum: 2nd Generation S-series (1995-2005) Tech
04-30-2021, 02:02 PM
Replies: 10
Views: 267
Posted By GeorgeLG

One additional operation point: There is a...

One additional operation point:

There is a pair of splice nodes for both motor wires to the liftgate and two rear doors near the rear doors so if there is a wiring fault it helps to narrow down...
Forum: 2nd Generation S-series (1995-2005) Tech
04-30-2021, 01:55 PM
Replies: 10
Views: 267
Posted By GeorgeLG

Operation: All 4 doors and the liftgate get the...

Operation:
All 4 doors and the liftgate get the same lock signal on the same wire from the same relay. All but the drivers door get the same unlock signal on the same wire from the same relay. The...
Forum: 2nd Generation S-series (1995-2005) Tech
04-21-2021, 10:49 AM
Replies: 9
Views: 693
Posted By GeorgeLG

Did all of these codes arrive together or are...

Did all of these codes arrive together or are they unrelated?


George
Forum: 2nd Generation S-series (1995-2005) Tech
04-20-2021, 01:31 PM
Replies: 8
Views: 169
Posted By GeorgeLG

The ECM thinks that your MAF is reporting out of...

The ECM thinks that your MAF is reporting out of its normal range. The questions is whether the airflow is out of range or the sensor is failing/dirty. Are there any other symptoms or codes? Inspect...
Forum: 2nd Generation S-series (1995-2005) Tech
04-20-2021, 08:39 AM
Replies: 21
Views: 805
Posted By GeorgeLG

I’m going to leave you with Les on this, I think...

I’m going to leave you with Les on this, I think he has a better handle on your problem. I’m sure he will get you fixed up.


George
Forum: 2nd Generation S-series (1995-2005) Tech
04-20-2021, 12:28 AM
Replies: 21
Views: 805
Posted By GeorgeLG

So its downshifting and engine braking? ...

So its downshifting and engine braking?

George
Forum: 2nd Generation S-series (1995-2005) Tech
04-19-2021, 11:47 PM
Replies: 21
Views: 805
Posted By GeorgeLG

I'm having a hard time getting my head wrapped...

I'm having a hard time getting my head wrapped around what is happening here., So the truck surges on its own when you are not asking for a sudden increase in power from the accelerator pedal. The...
Forum: 2nd Generation S-series (1995-2005) Tech
04-19-2021, 06:14 PM
Replies: 8
Views: 169
Posted By GeorgeLG

Which code are you getting? George

Which code are you getting?


George
Forum: 2nd Generation S-series (1995-2005) Tech
04-19-2021, 01:57 PM
Replies: 21
Views: 805
Posted By GeorgeLG

So when the engine surges, the tach reading goes...

So when the engine surges, the tach reading goes up, you hear an increase in engine rpm and the truck accelerates? IOW, the truck acts exactly the same as if you had depressed the accelerator pedal a...
Forum: 2nd Generation S-series (1995-2005) Tech
04-16-2021, 01:25 PM
Replies: 6
Views: 197
Posted By GeorgeLG

That depends on your skill level, tools and...

That depends on your skill level, tools and willingness to learn. Typically you grind down to raw metal and pull the dents out as close to the proper profile as you can with suction, welding or punch...
Forum: 2nd Generation S-series (1995-2005) Tech
04-16-2021, 09:00 AM
Replies: 6
Views: 197
Posted By GeorgeLG

Do you want to stop the metal from rusting or do...

Do you want to stop the metal from rusting or do you want a proper and complete repair of that damage?


George
Forum: 2nd Generation S-series (1995-2005) Tech
04-13-2021, 09:53 PM
Replies: 30
Views: 847
Posted By GeorgeLG

I wrote a new article that may be helpful: ...

I wrote a new article that may be helpful:

Oxygen sensors (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/oxygen-sensors-103282/#post733375)


George
Forum: 2nd Generation S-series (1995-2005) Tech
04-13-2021, 09:48 PM
Replies: 12
Views: 539
Posted By GeorgeLG

Oxygen sensor Tech Article

My latest article:


Oxygen Sensors


O2 sensor, oxygen sensor, air-fuel sensor, wide band sensor, lambda sensor. These are all different versions or names of the same sensor type, all with the...
Forum: 2nd Generation S-series (1995-2005) Tech
04-13-2021, 10:59 AM
Replies: 30
Views: 847
Posted By GeorgeLG

I forget about the EGR valve because my 4.3L does...

I forget about the EGR valve because my 4.3L does not have one. It’s worth a look.

George
Forum: 2nd Generation S-series (1995-2005) Tech
04-13-2021, 10:26 AM
Replies: 30
Views: 847
Posted By GeorgeLG

There are a number of ways to test for a cat...

There are a number of ways to test for a cat induced exhaust restriction. The most conclusive test is to remove an O2 sensor and measure the back pressure at the O2 port. There is also temp...
Forum: 2nd Generation S-series (1995-2005) Tech
04-13-2021, 09:36 AM
Replies: 30
Views: 847
Posted By GeorgeLG

It sure looks like you might have a bad cat. If...

It sure looks like you might have a bad cat. If that is confirmed the question then is why? The biggest causes of premature failure is:

Physical damage
Burning oil
Coolant leak
Unburned fuel...
Forum: 2nd Generation S-series (1995-2005) Tech
04-12-2021, 09:42 PM
Replies: 30
Views: 847
Posted By GeorgeLG

Do you know how to test for a failed cat?: ...

Do you know how to test for a failed cat?:

Exhaust pressure gauge
Vacuum gauge
Remove O2 sensor
IR gun on cat
...


George
Forum: 2nd Generation S-series (1995-2005) Tech
04-12-2021, 07:30 PM
Replies: 30
Views: 847
Posted By GeorgeLG

exhaust restriction from a bad cat can cause your...

exhaust restriction from a bad cat can cause your symptoms and running rich can cause a bad cat. What is the decode on those graph colors?

George
Forum: 2nd Generation S-series (1995-2005) Tech
04-12-2021, 01:40 PM
Replies: 30
Views: 847
Posted By GeorgeLG

you can read my fuel trim article found in my...

you can read my fuel trim article found in my signature. Negative isn’t good or bad. Large numbers are bad. Changing numbers under different conditions help us find the problem

George
Forum: 2nd Generation S-series (1995-2005) Tech
04-12-2021, 01:38 PM
Replies: 30
Views: 847
Posted By GeorgeLG

I meant cylinder compression and cylinder leak...

I meant cylinder compression and cylinder leak down test. There is nothing wrong with doing the fuel pressure leak down test but I Don’t think that’s your problem

George
Forum: 2nd Generation S-series (1995-2005) Tech
04-12-2021, 12:49 PM
Replies: 30
Views: 847
Posted By GeorgeLG

Your idle fuel trims are good. They are positive...

Your idle fuel trims are good. They are positive meaning that the O2 sensors are requiring the ECM to command the injectors slightly more rich to maintain minimum emissions. Then when you try to rev...
Forum: 2nd Generation S-series (1995-2005) Tech
04-11-2021, 09:16 PM
Replies: 30
Views: 847
Posted By GeorgeLG

I will be glad to help you but you have to answer...

I will be glad to help you but you have to answer my previous questions so we can narrow this down. Some possibilities are:

Fuel pressure
Exhaust restriction
Compression
Ignition
MAF sensor...
Showing results 1 to 50 of 500
 
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