1997 Chevrolet Blazer - Answered Questions & Fixed issues

This simple task often doesn't have the results you expect because the stock radio is part of the computer system and the radio is monitored by and driven by the BCM. Things like Warning Chimes and Clickers are driven from the BCM and played via the stereo speakers. Wiring diagrams in the link https://www.google.com/search?q=1997+chevy+blazer+stereo+wiring+diagram ..

Is there an injector pulse going to the injector?(an electrical pulse to fire the injector).
Is there spark at the plugs?
If the pickup in the dist is faulty you won't have either one.
If your vehicle uses a crank pickup with or instead of dist pick up....if it is defective ....no pulse.
The above is 90% cause of no pulse....other is computer problem 10%.
If you do have a injector pulse and no spray.....and have fuel pressure....change the injector.
A quick check for spark is spray a little starting fluid in it.....if it starts on the fluid....spark is present.

I would check the door jamb switches. The front door ones are mounted in the side of the dashboard.

The OBDII / OBD2 connector is 18" from the center of the center console.







You will need to purchase an OBDII scanner/reader to read these codes.

The alternative method is get a OBD2 cable and a laptop + software to pull the codes.

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An inexpensive OBD2/CAN bus reader around $75-$120 is a good start.
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Did the inspector mention anything about drive cycle or lack of stored readyness fields?

Please email on why it fail. You can append more info by click the button on TOP RIGHT of this page.

Get a wiring diagram of the part of the vehicles system your havingproblems with and properly diagnose & repair

i would start by investigating the fuse box for a possible blown fuse.also double check the wiring connector is fully seated on the part you have replaced

Probably not the column, it is probably the PASSLOCK system. If I remember right, the blazer/ Jimmy were a bit special. If you have a stereo shop close by that installs remote start systems, give them a call.

Behind glove box in relay center

Where do you buy the relay and if you buy one are they all the same?

None of these things are related there all separate issues. The window problem is in the door control master switch . the abs could be a wheel speed sensor vary likely and the blower motor could be an accuator or a bad vacuum switch or a bad connection at the blower motor or the resistors .

You need either the service manual or go to Alldatadiy.com for wiring schematics.

My personal suggestion would be to go for these repair catalogs. I know this website reliable-store that i used to buy them from, and they sold online it was very good manual. Go ahead, I bet.

Bad arm bushing or bad balljoint. It could also be cause by a loose or bad wheel bearing

I had the same problem 2 times the first was a bad Camshaft sensor the second was a cranksensor

One of the Hubs could be staying engaged and that COULD contribute to the transmission overheating as it is constantly straining. GM had am issue at one time with the front axles on their 4X4's. The motor and harness on the axle had to be replaced, but I am not sure of the exact years of these vehicles. But sounds like a fluid issue, TOO MUCH, WRONG TYPE, OVERHEATING.

if it is a 4.3 v-6 with multiport injection ,it may be the spider unit. try putting gas into the throttle body and see if it starts. if it does than replace the fuel injection unit (spider unit) If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_4c166ba81493f541

Had an issue similar to this with a customer astro van. It was the front differential that destroyed itself. We took the front driveshaft off and he drove it like that for a while. Then sold it. So, I am not sure what happened inside that front axle, but is was locked up. As long as we took off the driveshaft, the spider gears were the only thing spinning internally. So it could be driven again.

Do you know what a splice in a wiring harness is ? Looking at a wiring diagram for the heater / A/C controller . I see S221 ,may have a break in the wire right there . Look here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model , an engine size . Under system click on HVAC , then under subsystem click on HVAC control's ,then click the search button ,then the first blue link . Scroll down to the thrid diagram. If you had factory service info. you could find the location of that splice .

the help you want is in the service and repair manual with diagram and you can get the manual from the given link http://toolsnyou.com/

May have to cut a hole in panel. Been there. Put a big sticker over the hole afterward.