Dealer Service Information Bulletin 68-I-47 – Complaints of Low Brake Pedal
Bulletin 68-I-47 — Pontiac Motor Division Dealer Service Information Bulletin, Section 5, dated February 28, 1968. Attention: Service Manager.
Subject: Complaints of Low Brake Pedal.
Short answer: Many low brake pedal complaints on power-brake-equipped vehicles are psychological in nature — the depressed floor area directly below the pedal is a design feature. Pedal height should be measured as described below; pedal height must not be adjusted, and if it does not meet specification, a full brake system inspection per the 1968 Pontiac Service Manual is required.
The area of the floorboard located directly below the brake pedal is depressed by design, allowing full travel of the brake pedal in the fully applied position and permitting the driver to pivot his foot from the accelerator to the brake with no appreciable raising of the foot (see the scan below, Fig. 1).
Correct method to check brake pedal height (see the scan below, Fig. 2): With the pedal in the fully released position, measure from the lower (inner) edge of the pedal pad to the raised area of the floor. The distance should be 2½″. This measurement may vary slightly depending on the amount of compression applied to the carpet and jute.
It is important that no attempt be made to adjust pedal height.
The specification requires that the brake pedal clevis (which connects the pedal arm to the pushrod) be torqued at the clevis stop nut to 90 lb-in. This applies to all 1968 applications.
If pedal height does not meet specifications, perform a thorough check of the brake pedal and associated parts (mounting bracket, clevis adjustment, etc.) and perform repairs as outlined in the 1968 Pontiac Service Manual.
Content last modified: June 13, 2026 at 10:06 am
← Frequently Asked Questions
