98 Blazer 4wd not working
#1
98 Blazer 4wd not working
Hey guys, I have a 98 blazer two door with 5 speed manual. When I push the 4lo or 4hi button it doesn't engage 4wd. The transfer case control module makes a tick noise and the lights on the 4lo and 4hi blink a few times. I replaced the transfer case switch for a new one, the actuator for a new one, and tried using a used tccm from a junkyard but I'm still having the same problems. Any suggestions?
Thanks guys
Thanks guys
#2
You can try looking at this page. My reply on the page is the 8th one from the top. https://blazerforum.com/forum/2nd-ge...05/#post675939
#3
I checked most vacuum lines that are within easy reach including the one you mentioned that's located on the driver side fender. They're all properly attached and don't look rotten. Truck has 170k miles all california highway miles and has an excellent maintenance record.
You guys think it might be the tccm that went bad?
You guys think it might be the tccm that went bad?
#4
I checked most vacuum lines that are within easy reach including the one you mentioned that's located on the driver side fender. They're all properly attached and don't look rotten. Truck has 170k miles all california highway miles and has an excellent maintenance record.
You guys think it might be the tccm that went bad?
You guys think it might be the tccm that went bad?
Regarding the TCCM, I had mine go out at about 125k miles. The relays on the board I think just wore out. Unlike other electrical problems where the component either works for doesn't, my TCCM gradually got worse with the lights on my 4wd switch blinking a fair amount when it finally failed for good. It is not a hard repair to do. I found a good price on a NOS GM part on eBay.
#6
A lot of people get a used one from a wrecking yard when their's breaks. If convenient and not too expensive, you might give that a try after you have tried other fixes. Foe my case, I knew I was going to keep my truck for a while so I got a NOS one. I think it cost me $80?