I am having long stop distances when the ABS kicks in (very scary!!)..I ran across this recall on my 1995 Jimmy 4x4...Trying to figure out exactly what switch they are talking about? What is it called? Where is it?......also I didn't know the 4x4 system had anything to do with the ABS? I would love to know...I feel I am definitely going to learn something new today lol

1995 GMC Jimmy factory recall on ABS brake problem

JWM54
MEMBER1995 GMC JIMMY6 CYL4WDAUTOMATIC111,000 MILES
The factory has a recall out to repair an abs braking problem.

JUL 19, 1999 | Recall ID# 59283 Hide Details
Recall Reason SERVICE BRAKES, HYDRAULIC:ANTILOCK
Recall Date JUL 19, 1999
Model Affected JIMMY
Potential Units Affected 1125749

Recall Summary
VEHICLE DESCRIPTION: CERTAIN 4-WHEEL DRIVE PICKUP TRUCKS AND SPORT UTILITY VEHICLES EQUIPPED WITH ABS (ANTILOCK BRAKING SYSTEM) MANUFACTURED FROM SEPTEMBER 1989 THROUGH AUGUST 1996. UNDER CERTAIN DRIVING CONDITIONS THE SWITCH WHICH SIGNALS THE ABS SYSTEM WHETHER THE VEHICLE IS IN 2-WHEEL OR 4-WHEEL DRIVE CAN MALFUNCTION CAUSING INCREASED STOPPING DISTANCES DURING ABS STOPS WHILE IN THE TWO-WHEEL DRIVE MODE.

Consequence
IF THIS OCCURRED AT A TIME WHEN MINIMUM STOPPING DISTANCE WAS REQUIRED, A VEHICLE CRASH COULD OCCUR WITHOUT PRIOR WARNING.

The Fix

Dealers will replace or repair the 4-wheel/2-wheel drive switch.

• Posted 2000-05-31
• Following Investigation EA94038
• Vehicles Affected 1,125,749
• NHTSA ID 99V193000
• Manufacturer ID 99041

 

I'm not smart enough to link it here so go to steering - suspension & drivetrain - post by montanajimmy75 - 4wd actuator vacuum line - you find what your looking for along with the replacement part numbers .....

 

Here it is:
https://blazerforum.com/forum/steeri...m-line-100359/

 

Thank you, You were smarter than me.. I didn't know that the ABS and 4x4 communicate and Why? I found out the ABS acts differently when 4x4 is engaged...Thanks for taking the time to answer my post