S15/T15 4WD P/U V6-262 4.3L (1988)
Shift Linkage: Customer Interest
Transfer Case - Hopout From 4-High to 2-High
GMC NUMBER:
89-T-75
GROUP:
7D - Transfer Case
DATE:
July, 1989
CORPORATE
NUMBER:
967401
SUBJECT:
TRANSFER CASE HOPOUT (4-HIGH TO 2-HIGH)
MODELS:
ALL 1988-1989 T TRUCKS EQUIPPED WITH NEW PROCESS 231 TRANSFER CASE
Some 1988-1989 T trucks may experience transfer case "hopout" from four wheel drive range to two wheel drive mode. This condition is most prevalent
under extreme cold weather conditions (below 0 degrees F).
Some probable causes are listed below:
1.
Transfer case not fully engaged into 4 High position.
2.
Transfer case boot convolute trapped beneath the floor console.
3.
Transfer case shift linkage (detent bracket) improperly adjusted.
4.
Inadequate transfer case detent spring load.
