K 1500 Truck 4WD V8-350 5.7L (1986)
Technical Service Bulletin # 86C19E
Date: 920601
Recall - LH Lower Control Arm Cracking
GMC NUMBER:
86-C-19(E)
GROUP:
3C Front Suspension
DATE:
June 1992
SUBJECT:
LH LOWER CONTROL ARM CRACKING
MODELS:
1985-86 P3 COMMERCIAL MODEL TRUCKS WITH 350 GAS ENGINES (LT9) OR DIESEL ENGINES (LL4)
1985-86 G3 VANS WITHOUT RECREATION VEHICLE CHASSIS MODIFICATION (9A2) OR HEAVY DUTY FRONT SUSPENSION (F42)
1985-86 C3 MODEL TRUCKS BUILT WITHOUT HEAVY DUTY FRONT SUSPENSION (F42)
THIS BULLETIN CANCELS AND SUPERSEDES CAMPAIGN BULLETIN 86-C-19(D) ISSUED JANUARY 1992. ALL COPIES OF 86-C-19(D)
SHOULD BE DESTROYED. BULLETIN WAS REVISED TO ADD TWO LABOR OPERATIONS AND TO REVISE THE SERVICE
PROCEDURE.
The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be
adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after tender of a
vehicle is prima facie evidence of failure to repair within a reasonable time.
If the condition is not adequately repaired within a reasonable time, the owner may be entitled to an identical or reasonably equivalent vehicle at no
charge, or to a refund of the purchase price less a reasonable allowance for depreciation.
To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule appointments with owners and to repair their
vehicles as soon as possible. As you will see in reading the copy of the letter which is being sent to owners, the owner is being instructed to contact the
nearest GMC Zone Office if the dealer does not remedy the condition within five days of the mutually agreed upon service date. If the condition is not
remedied within a reasonable time, they are instructed how to contact the National Highway Traffic Safety Administration.
DEFECT INVOLVED
General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1985-86 P3 Commercial Model Trucks with 350 gas
engines or 6.2L diesel engines, 1985-86 G3 Vans with 350 gas engines or 6.2L diesel engines and 1985-86 C3 model trucks built without heavy duty
front suspension. The left hand lower control arm can crack starting at the rear flange and progress to the ball joint mounting hole and eventually cause
the lower ball joint to separate from the control arm. If this happens, a loss of vehicle steering control can occur which could result in a vehicle crash
without prior warning.
To prevent this condition from occuring, dealers are to install a reinforcement brace to the left hand lower control arm.
VEHICLES INVOLVED
