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Chevy Blazer GMC Jimmy Maintenance and Repair

3674 messages,  Last post on May 10, 2013 at 1:58 PM

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Messages Page 315 of 368

#3139 of 3674 Re: 1995 Chevy Blazer 4WD not engaging [Mr_Shiftright] by chevyride22

Feb 07, 2008 (2:31 pm)

Replying to: Mr_Shiftright (Feb 01, 2008 10:56 am)
I hooked up a vacuum source to the actuator under the battery and when I put it in 4wd the front wheels engaged like they should. That tells me that the transfer case and switching are o.k. I have traced the vacuum hoses but cannot see any breaks or cracks. Do you know where the original source for the vacuum connects? The only other part that I see that has a vacuum hose connected to it (other than the transfer case switch with 3 vacuum hoses and the actuator under the battery) is a switch mounted on the passenger's side fender beside the battery. This same switch also has an electrical connector to it (vacuum hose at one end, electrical connector at the other). Would you know what know what this switch is used for? Thanks.

#3140 of 3674 GM Remote Keyless Entry Installation by jlflemmons

Feb 08, 2008 (9:39 am)

I am posting this for anyone who wants to add RKE to a late model Blazer/Jimmy.
 
If your glove box RPO label does not show AU0 on the codes, you do not have remote keyless entry from the factory.
 
Now, the good news.
 
Used RKE receivers are available (cheap) online. I got mine on eBay from s10warehouse for $15 including shipping. It installs on the backside of the panel above the parking brake pedal, and the wiring harness is already there. Takes about 5 minutes to install.
 
Now for the fun part. You MUST have a GM dealer enable the module. My dealer had never done this before, so I figured it would be good to share the knowlege.
 
The technician will need to download the BCM (body control module) software into a TechII programmer and transfer the information to the shop computer. Then, you scroll down through the list of details till you get to "Equipped with RKE" or something like that. It will show "NO". The tech just toggled this to "YES", saved the data back into the Tech II, and reloaded the program into the vehicle BCM.
 
That's it, now the vehicle knows the module is there. I wanted to be as specific as I could on this because dealers generally have never heard of this procedure. They regularly re-program key fobs, or add key fobs, but telling a car that was built without RKE that it now has it, is just not something they often do, if ever.
 
FOB programming varies somewhat from model to model, but if you check http://www.programyourremote.com/
you will probably find what you need. There is a company advertising on their website called ChipKeys.com. I bought my key fobs from them, the prices were the cheapest I found, and delivery was quick, and new product.
 
I don't work for any of the companies mentioned here, nor do I know anybody at the companies. But I had really good support and delivery and thought I would share the experience.
 
Jim

#3141 of 3674 Re: Spark Plugs [murphy51] by quantumtouchfl

Feb 08, 2008 (2:09 pm)

Replying to: murphy51 (Jan 17, 2008 6:19 pm)
I have a 96 LS... 182K miles... I have changed the spark plugs twice... I had no trouble changing this plug... I used a box end wrench. I will take a pic and post sometime soon.
 
TJ

#3142 of 3674 heatrer core? by parkeradamc

Feb 08, 2008 (10:00 pm)

does anyone know where the heater core is located on a 96 jimmy and how to access it. i have half the dash apart and starting under the hood? help
\

#3143 of 3674 Re: Spark Plugs [quantumtouchfl] by parkeradamc

Feb 08, 2008 (10:01 pm)

Replying to: quantumtouchfl (Feb 08, 2008 2:09 pm)
sir do you know anything about the heater core? mine is leaking into the passanger side floor boards

#3144 of 3674 emissions by nmart

Feb 09, 2008 (1:52 pm)


 
I have a 1989 S10blazer The 4.2 V6 fi 175,456 mileas. Went for emissions test and Air inj sys, egr,pcv,fuel inlet restrictor, Cat Coverter,Evap control sys, gas cap integrity all passed, tail pipe #'s
CO%
Idle limit 1.20 reading 7.22 fail
2500 rpm 1.20 reading 6.86 fail
HC ppm
Idle 220 ...382. fail
2500 rpm 220... 267 fail
 
Seems there is to much emisions coming out of tail pipe all other things are ok. I do smell fuel when it starts though, and iot runs rough sometimes. I always kept up on tunups. also seems to eat more gas.. Need to know what parts would effect emissions that would cause high CO%. need to know something before having it fixed. thanks
 
thanks for any help/

#3145 of 3674 Re: Spark Plugs [parkeradamc] by 79blazer

Feb 09, 2008 (3:11 pm)

Replying to: parkeradamc (Feb 08, 2008 10:01 pm)
Yeah my brother has that problem every, i don't know how it happens but it just developes a small hole over time, the heater core its self is not alot but the labor is. You have to take the entire dash off.

#3146 of 3674 Re: emissions [nmart] by jlflemmons

Feb 09, 2008 (7:16 pm)

Replying to: nmart (Feb 09, 2008 1:52 pm)
Had a similar problem on a 6.0L. Turned out to be a bad fuel regulator that was "leaking" for want of a better word.

#3147 of 3674 Engine High RPM Misfire and fuel cutoff by jlflemmons

Feb 09, 2008 (7:32 pm)

2002 Blazer Xtreme, 61k miles.
 
I bought this little gem a few weeks ago and have been going through the myriad of mechanical and electrical eccentric behavior. Knocked out the last one this morning. In the transmission thread I wrote about the off the wall behavior of the transmission, shifting into neutral at high RPM. Well, the mechanicals all checked out great, drained and refilled with a fresh filter, and had the software purged and reloaded with the latest updates from GM. Shifts great, no issues, until ...
 
5000RPM, just before the shift, engine has a major misfire and shuts down fuel momentarily. No codes set. Fuel pressure good, installed new cap and rotor, repositioned the coil wire to be sure it wasn't arcing. No dice, same symptom. I read where if a problem could be repeated several times in a short period of time, a code would be set. So, as much as it pained me to do it, the third time set a CEL, crankshaft position sensor. The sensor checked out okay statically, but these things are Hall Effect sensors. If the output is weak, the faster the pulses come through the greater the chance of the sensor missing it. Which is exactly what was happening. And when the CPS doesn't see pulses, the fuel and ignition shut down. After all, the CPS says the engine is not turning.
 
So the sum is this; if you have an engine that runs fine under normal conditions, but cuts out and falls on its face at high RPM, look closely at the CPS. It has been revised by AC Delco, and the new part number is 12596851. Replacing the CPS not only corrected the high RPM misfire, but the occasional 'hiccup' in normal driving. This symptom is not limited to the 4.3L, but can occur in any engine using the CPS for feedback to the engine control system.
 
Hope this helps somebody.
 
Jim

#3148 of 3674 anyone know what this could be? by misstee1

Feb 11, 2008 (9:16 am)

Hi, this is my first post so please let me know if I am leaving something out. I have a 98 Jimmy xls 2wd 4dr 150,000mi--I hear a whistling/screeching noise sometimes when I start it up, when driving hear an airplane like sound occasionally that's the best I can describe it as. It sounds like rumbling air. Also when driving for a while check engine light comes on and the car jerks between 1st and 2nd gear. Have been told the airplane sound might be the air intake meter or something like that. Have no clue what the whistling sound or the jerking is. Please help!

Messages Page 315 of 368

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