Chevrolet Silverado / GMC Sierra. Service manual — part 1224

Fig. 3: Ignition Secondary 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.

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Fig. 4: 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

See 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 shoes

See STARTER article

Starter Turns but Engine Does Not Rotate

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures

Starter clutch slipping

See STARTER article

Broken clutch housing

See STARTER article

Pinion shaft rusted or dry

See STARTER article

Engine basic timing incorrect

See Ignition Timing in

TUNE-UP article

Broken teeth on engine flywheel

Replace flywheel and

check for starter pinion

gear damage

Starter Will Not Crank Engine

Faulty overrunning clutch

See STARTER article

Broken clutch housing

See STARTER article

Broken flywheel teeth

Replace flywheel and

check for starter pinion

gear damage

Armature shaft sheared or reduction gear teeth stripped

See STARTER article

Weak battery

Charge or replace battery

as necessary

Faulty solenoid

See On-Vehicle Tests in

STARTER article

Poor grounds

Check all ground

connections for tight and

clean connections

Ignition switch faulty or misadjusted

Adjust or replace ignition

switch as necessary

Starter Cranks Engine Slowly

Battery weak or defective

Charge or replace battery

as necessary

Engine overheated

See ENGINE COOLING

SYSTEM article

Engine oil too heavy

Check that proper

viscosity oil is used

Poor battery-to-starter connections

Check that all between

battery and starter are

clean and tight

Current draw too low or too high

See Bench Tests in

STARTER article

Bent armature, loose pole shoes screws or worn bearings

See STARTER article

2008 Chevrolet Silverado 1500

GENERAL INFORMATION Trouble Shooting - Basic Procedures