ABS - Revised Code 5 Diagnostic Chart

90chevy15
GMC NUMBER: 90-5E-69

GROUP: 5E Anti-lock Brakes
DATE: June, 1990

CORPORATE
NUMBER: 065008R

Figure 1:

SUBJECT: RWAL CODE 5 DIAGNOSTIC INFORMATION

MODELS: 1988-90 C/K TRUCKS, 1989-90 S/T TRUCKS AND M VANS, 1990 R/V TRUCKS AND G VANS

The attached chart (see Figure 1) is a revised code 5 diagnostic chart. The revised chart requires a check of wiring and the transfer case switch operation before the control valve is replaced on 4 wheel drive vehicles. The chart also revises code 5 diagnostic information in the following service manuals:

MANUAL VEHICLES

X-8731 1988 C/K
X-8931 1989 C/K
X-9031 1990 C/K
X-9032 1990 R/V AND G
X-8929 1989 S/T
X-9029 1990 S/T
X-8930 1989 M VAN
X-9030 1990 M VAN