Copyright © 1998 General Motors Corp.
8–1
W T E C I I E L E C T RO N I C C O N T RO L S T RO U B L E S H O OT I N G M A N UA L
IMPORTANT:
Make the following general checks before beginning specific troubleshooting, removing the transmission, or
removing attached components.
•
Is the lever shift selector lever in
N
(Neutral) to allow starting the engine?
•
Is the battery properly connected and charged?
•
Is isolated battery properly connected (if used)?
•
Have the items on Pages 6–17 and 6–18 in Section 6–5 been checked?
•
Is the fluid level correct?
•
Is voltage to the ECU correct?
•
Is the engine properly tuned?
•
Is fuel flow to the engine correct?
•
Are wheel chocks in place?
•
Is air flow to the cooler and radiator unrestricted?
•
Is the driveline properly connected?
•
Are there signs of fluid leakage under the vehicle? What is the origination point?
•
Are hydraulic connections correctly made and not leaking?
•
Is vehicle acceleration from a stop changed?
•
Are electrical connections correctly made?
•
Are there any other obvious vehicle or transmission problems?
After making these general checks use the various sections of this Manual to isolate the listed problems.
The following charts address specific vehicle complaints. Some complaints involve diagnostic codes, so all
troubleshooting checks should involve checking the system for diagnostic codes.
S
ECTION
8 — GENERAL TROUBLESHOOTING OF
PERFORMANCE COMPLAINTS
