Chevrolet Silverado / GMC Sierra. Service manual — part 1216

IGNITION SYSTEM TROUBLE SHOOTING

connections

Defective alternator or battery

See On-Vehicle Tests and

Bench Tests in

ALTERNATOR article

Add-on electrical accessories exceeding alternator
capacity

Install larger alternator

Battery Overcharged-Uses Too Much Water

Defective battery

Check alternator output and

repair as necessary

Defective alternator

See On-Vehicle Test and

Bench Tests in

ALTERNATOR article

Excessive alternator voltage

Check alternator output and

repair as necessary

NOTE:

This is GENERAL information. This article is not intended to be
specific to any unique situation or individual vehicle configuration.
The purpose of this Trouble Shooting information is to provide a list
of common causes to problem symptoms. For model-specific
Trouble Shooting, refer to SUBJECT, DIAGNOSTIC, or TESTING
articles available in the section(s) you are accessing.

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Fig. 1: Ignition Secondary Trouble Shooting Chart

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Fig. 2: Ignition Primary Trouble Shooting Chart

STARTER TROUBLE SHOOTING

BASIC STARTER TROUBLE SHOOTING CHART

NOTE:

This is GENERAL information. This article is not intended to be
specific to any unique situation or individual vehicle configuration.
The purpose of this Trouble Shooting information is to provide a list
of common causes to problem symptoms. For model-specific
Trouble Shooting, refer to SUBJECT, DIAGNOSTIC, or TESTING
articles available in the section(s) you are accessing.

CONDITION & POSSIBLE CAUSE

CORRECTION

Starter Fails to Operate

Dead battery or bad connections between starter and
battery

Check battery charge and

all wires and connections

to starter

Ignition switch faulty or misadjusted

Adjust or replace ignition

switch

Open circuit between starter switch ignition terminal on
starter relay

Check and repair wires

and connections as

necessary

Starter relay or starter defective

See Testing in STARTER

article

Open solenoid pull-in wire

Testing in STARTER

article

Starter Does Not Operate and Headlights Dim

Weak battery or dead cell

Charge or replace battery

as necessary

Loose or corroded battery connections

Check that battery

connections are clean and

tight

Internal ground in starter windings

See Testing in STARTER

article

Grounded starter fields

See Testing in STARTERS

Armature rubbing on pole

See STARTER article

shoes

Starter Turns but Engine Does Not Rotate

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures