When i engage the 4wd the indication light flashes on and off.


Asked by Jan 31, 2014 at 10:10 PM about the 1999 Chevrolet Tracker 4 Dr STD 4WD SUV

Question type: Maintenance & Repair

The indication light use to stay on all the time when 4 wheel drive was ingaged. Now it flashes on and off.

6 Answers


Change the vacuum hose on the front differential right at the bottom it will fix the flashing light on 4x4

4 out of 4 people think this is helpful.

Its usually the actuator. I will rebuild your actuator or sell you a rebuilt one 1/4 the price of new. But first lets determine if its the problem. troyobe88@gmail.com

1 out of 1 people think this is helpful.

Please Help. Anything at all would be helpful. I'm having the same problems with my 4x4 on my 89 Chevrolet Tracker, except My light on the dash of my tracker lights up perfect and dont blink or anything else. It stays lit all the time, but when it's in 4wheel only the back wheels will spin. The front will not engage. Every now and then it will engage, but stops almost instantly. It's a lever 4x4 H/L/N, not a push button with auto hubs, not locking hubs that you have to turn on the front wheels. Someone told me it's the actuator to engage the front 4x4, but I can't locate it. Can anyone tell me, send a pic or video, or something to locate it? Is there a way to test it? Is there a way to bypass it and lock it into 4wheel either all the time or only when I need it, without having to replace the actuator? If it's not the actuator, what else could it possibly be? It's on a 1989 Chevrolet Tracker 4x4 1.6L 4cyl 4door. Please can anyone help me. Email me @ johnpierce61@gmail.com Thank you in advance.


First to clarify my earlier post from actuatorfix then visit Johns question - It is usually the Actuator Pump, I can refurbish the Pump or I also sell Brand New and Refurbished pumps at website ActuatorPumpRepair.com Less common is the Actuator, I also sell "OEM' Actuators and, those aren't repairable. Attempting to Lock an Actuator open within the differential has a very high Failure rate and for good reason, it is labor intensive to do so and you still have to replace the hubs with manual. For all the effort and money, it is easier and cost effective to just do it right and return to convenience . To visit the question above from jpierce9801, John likely has a 1999 Tracker (not 89). It sounds like the ECM (Electronic Control Module - Brain) has placed the system into protective mode giving a green light all the time. Assuming the light isn't going off even in 2 WD also tells me the pump has multiple severe problems as It can not clear the ECM. If a pump runs for more than 10 seconds without achieving pressure, the ECM will override and discontinue, and give you a green light. The question then becomes, is it a failed pump or a failed actuator? I am thinking Johns pump isn't even coming on anymore. If your pump is causing the ECM to override, it is best to discontinue as you don't want to be messing with the Cars Brain. More info and testing instructions on ActuatorPumpRepair.com.


If instead, your light is flashing On and Off, it is most likely a failed pump. Squeeze the hose coming off the pump and going to the differential, if the light continues to blink the pump is bad. If light goes solid then likely the actuator within the differential beginning to fail. You can test the actuator with a foot pump to confirm. ActuatorPumpRepair.com for more on that.


02 ZR2 blazer…lost keys and to dismantle ignition, removed tumbler in ignition switch, and now stuck in 4lo and all three indicator are on…any solutions to fix?

Your Answer

Add photo

Related Questions


Looking for a Used Tracker in your area?

CarGurus has 325 nationwide Tracker listings starting at $2,999.


Search Chevrolet Tracker Questions

Chevrolet Tracker Experts

#1 actuatorfix
Reputation 520
#2 lightGear
Reputation 220
#3 markmaki
Reputation 180
View All

Related Models For Sale

Used Toyota RAV4"
1,189 Great Deals out of 49,063 listings starting at $2,499
Used Suzuki Grand Vitara"
21 Great Deals out of 434 listings starting at $2,700
Used Honda CR-V"
1,503 Great Deals out of 80,985 listings starting at $1,695
Used Jeep Wrangler"
464 Great Deals out of 16,413 listings starting at $3,400
Used Chevrolet Tahoe"
1,076 Great Deals out of 36,075 listings starting at $1,700
Used Suzuki Vitara"
50 listings starting at $3,950
Used Kia Sportage"
261 Great Deals out of 15,203 listings starting at $950
Used Chevrolet Silverado 1500"
2,447 Great Deals out of 144,777 listings starting at $1,995