20 Most Recent 1997 GMC Safari Questions & Answers

On most older GMs they are located on the firewall. If you follow the low pressure (suction) line from the Accumulator/Dryer
just before it goes through the firewall should be a block looking thing. That will be the expansion valve. If it's not there you have an Orfice tube rather than an Expansion Valve. The orfice tubes are usually located where the low pressure lines comes out of the Accumulator (the little radiator in front of your actual radiator.) Hope this helps you.

1997 GMC Safari | Answered on Jul 12, 2019

To what degree do you lose power and in what way? Do you loose over-drive or does it loose power and speed (on the streets, highway, or at any speed). From your discription it does sound like either a fuel flow/pressure issue or a clogged cat.

1997 GMC Safari | Answered on Apr 04, 2019

two different problems !

Rear heater problem: find under the hood where is hose for cooling liquid goes to front heating core!
you will see there also vacuum tubesgoing in to little valve ! disconnect the vaccum tubes ( engine off)
and spray in wd 40 in to the vlave ... valve is stuck and wont open flow to rear heater !

you do not have to replace tha thing . its very well made and because you dont turn this often in summer
it gets stuck. i had same problem. also make sure vacuum is working - Engine running turn rear heater on - vacuum sucks to open valve. and before that make sure fuse is ok .

for rear AC mine does not work either and it is leak on pipes that go from front to rear .. 10 feet of pipes and tubing $$ expensive repair ... forget it ... open the window...


1997 GMC Safari | Answered on Dec 28, 2018

sounds like fuel filter or garbage in your tank

1997 GMC Safari | Answered on Sep 01, 2017

Welcome to the world of improper diagnostics. There isn't a trouble code in the world that says you should replace a part. It only tells you what's going on with that component. In your case, the code P0137 means that the computer sees Low Voltage on the Bank I Sensor 2 oxygen sensor. You replaced the sensor and still have the problem. That means the computer sees Low Voltage on the Bank I Sensor 2 oxygen sensor. In other words, you've got a wiring problem, not a part problem. You'll need a shop manual with step by step instructions on how to test the entire circuit to find the fault.

1997 GMC Safari | Answered on Jul 27, 2017

The ABS light is usually a speed sensor problem and is a GM nuisance . it should not affect normal braking. It might be a booster for power assist problem, which will affect normal braking (expensive). Get rid of that old GMC.

1997 GMC Safari | Answered on May 23, 2017

Fuel relays then the fuel pump.

1997 GMC Safari | Answered on Mar 31, 2017

Here is a link to a video. Chevy Astro and GMC Safari are the same chassis and engine. Chevy 4 3 Astro Starter Replacement

1997 GMC Safari | Answered on Mar 30, 2017

It's the vent actuator, it moves the baffle that changes the direction of the air flow.
Here is a video of a broken vacuum hose that creates the same problem.

It could also be a failed actuator.

1997 GMC Safari | Answered on Sep 20, 2016

This is common for these. The power steering pump does not move a lot of fluid or have high pressure when at idle.

1997 GMC Safari | Answered on Jun 20, 2016


1997 GMC Safari | Answered on Mar 25, 2016

does the vehicle have an auto-start? Solenoid is getting energized from somewhere

1997 GMC Safari | Answered on Mar 05, 2015

Next step would be check the brake light switch. It is mounted about the brake pedal and has 2 wire leads to the switch. A simple switch that, when the brake pedal is depressed, the switch closes allowing current to make a connection and light up the brake lights. Check to make sure the wires are connected and that you have voltage at one of the terminals. A simple "circuit tester" is all you need. Turn on the ignition switch (no need to start your car) find the wire that has current (test light will light up). Then depress that pedal and you should have current at both terminals. If not, you probably have a bad switch. If you DO have current at both terminals, the problem is somewhere in the wiring harness.
Before tearing into it though. CHECK THE GROUND WIRES at the taillight assembly. Usually a single wire that is screwed into a metal part of the housing unit. If it corroded, loose or missing. That is your problem.
Hope this helps. Good Luck.

1997 GMC Safari | Answered on Nov 12, 2014

all seats are removable its how far are you willing to go to most ar bolted and these very tight hex heads or torx will require some work

1997 GMC Safari | Answered on Aug 07, 2014

Explore the following 2 products: K-Seal (ST5501)
Liquid Copper (1109)
I have not used either one but worth looking into.


1997 GMC Safari | Answered on May 30, 2014

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