So Fix it

Chevrolet introduced the Blazer in 1969 as an SUV version of its full-size pickup truck. The early Blazer evolved into the Chevy Tahoe, and Chevy applied the Blazer name to a new mid-size S-10 SUV in 1983. Chevrolet introduced a newly-designed second generation of the S-10 Blazer in 1995, and the Blazer remained basically the same for the next 10 years. The 1997 Chevy Blazer came in two-wheel-drive and four-wheel-drive trims, but the alignment specs were the same for both. Chevy discontinued the Blazer in 2005.

General Information

The caster, camber and toe-in were adjustable on the front end of the 1997 Chevy Blazer, but not on the rear end because the vehicle came with a fixed rear axle.

Caster

The caster angle measures the forward or rearward slope of the line between the upper and lower steering pivots on a vehicle when viewed from the side of the vehicle. The caster angle on the front end of the 1997 Blazer can range from +0.5 to +3.0 degrees, with the ideal setting being +1.75 degrees with 0.5 degrees of cross tolerance.

Camber

The camber is the vertical angle at which the front wheels of a vehicle lean when viewed from the front of the vehicle. If the the top of the wheel leans out, the camber angle is positive. If the top of wheel leans in, the camber angle is negative. The camber angle on the front end of the 1997 Chevy Blazer can range from zero to +0.5 degrees, with the ideal setting being +0.25 degrees with 0.5 degrees of cross tolerance.

Toe-in

The front wheels of most vehicles are set so that the fronts of the tires will angle slightly toward one another to help take tension off of the wheel bearings. This slight angle is known as the toe-in. The toe-in on the front end of the 1997 Chevy Blazer should be set at +0.1 degrees.

Fuel pumps transfer pressurized fuel to various engine components. Some vehicles, such as older motorcycles, do not require fuel pumps. Fuel injected engines use a fuel pump that is mounted on the inside of the fuel tank. There are options available to replace the fuel pump on a 1994 Chevrolet Blazer.

Mr. Gasket

The Mr. Gasket company manufactures the micro electric fuel pump, model 12S. The pump is compatible with 1994 Chevy Blazer vehicles. The pump can be used alone or as a booster pump. The micro electric fuel pump has a two wire design and works on vehicles with a 12-volt negative ground system. The pump delivers 35 gallons of fuel per hour under four to seven pounds per square inch of pressure. Instructions are included for self-installation. The universal design fits most domestic, non-diesel four, six and eight-cylinder vehicles.

Airtex

The Airtex electric fuel pump, part number E3902, is compatible with 1994 Chevy Blazer vehicles. A strainer is required to validate the pump warranty. Airtex electric pumps feature brush and terminal assembly, which prolong the life of the fuel pump. The ball check valve ensures fuel is delivered under a consistent pressure level. The inlet is specially molded to reduce friction. A screen filters out fuel contaminants.

Delphi

Delphi electronic fuel pumps feature internal steel plated, all metal components. The pump has internal springs that enhance stability and reduce tube chafing. Delphi electronic pumps have a large volume reservoir that delivers continuous fuel during vehicle cornering and low-fuel situations. A two-strainer system greatly reduces fuel contaminants. Delphi guarantees a correct gas gauge reading with its pumps. Installation is facilitated with a color-coded wire harness.

If you have allowed your Chevy Blazer time to warm up but still do not feel any heat in the passenger compartment there is a good chance that you have a faulty heater core. Because the heater core is located against the firewall, many mechanics charge quite a bit of labor for this repair. If you want to save the majority of the repair estimate, this is a job that you can complete yourself in about an hour.

Instructions

1

Disconnect the battery cable from the negative terminal on your Blazers battery. You need to do this any time you are completing a repair on your vehicle to reduce the chance of receiving an electrical shock.

2

Place a bucket under the radiator and drain the coolant from the cooling system. Typically, the drain plug is located at the bottom center of the radiator.

3

Remove the coolant hoses leading from the heater core to the engine. These are on the engine compartment side of the heater core. Plug the tubes of the heater core with a shop rag to reduce the chances of spilling coolant inside the vehicle when you remove the heater core.

4

Remove the heater core case located inside the passenger compartment. This case is located under the dashboard, just to the right of center of the vehicle. To do this, turn the screws connecting the heater core cover to the cowl counterclockwise and remove them.

5

Remove the support brackets from the heater core and remove the core from the passenger compartment side of the firewall.

6

Install the new heater core into the firewall. Be caul when you insert the tubes through the firewall so you dont bend them.

7

Install the support brackets and the heater core cover. Replace all of the retaining screws and turn them clockwise to secure.

8

Connect all hoses leading from the engine to the heater core inside the engine comparment, fill the radiator with coolant and reconnect the negative battery terminal.

Before you reset the codes on your 98 Chevy S-10 Blazer, you need to have the codes read and have the vehicle serviced or repaired by a qualified mechanic. If you dont, the warning and service lights will turn themselves back on. The functions of the Blazer are monitored by an On-Board Diagnostics II computer. When sensors positioned throughout the vehicle detect a problem, they send a trouble code to the computer, which can then be read using an OBD II scanner. This scanner can be purchased from any auto parts store.

Instructions

1

Open the door on the drivers side of the Blazer and find the data/diagnostic link connector, known as DLC, on the lower part of the dashboard. It can be found near the parking brake pedal.

2

Plug the scanner into the DLC.

3

Put the key into the ignition and turn it to the "ACC" position, but dont start the engine.

4

Press the "Erase" key on the scanner to erase the codes and reset the computer. Each scanner is a bit different depending on the manufacturer. So the code may be "Delete" instead or something similar.

5

Wait for the menu on the scanner to indicate the task has been completed.

6

Unplug the scanner and start the engine. Examine the instrument panel to make sure all warning and service lights have turned off.

Chevrolet introduced the S-10 Blazer as a two-door, compact SUV inspired by the S-10 Pickup truck in 1983. Chevy dropped the "S-10" from the vehicles official name in 1995, when the second generation of Blazers came out. The 1994 S-10 Blazer came in several two-wheel-drive and four-wheel-drive trims. All trims shared the same alignment specs. The alignment was not adjustable on the rear end of the 1994 S-10 Blazer because it came with a fixed rear axle. The caster angle, camber angle and toe were adjustable on the font end.

Caster

The caster angle of a vehicles wheels is an imaginary line drawn through the upper ball joint and lower ball joint of the wheel when viewed from the side of the car. If the line were perfectly vertical, the caster angle would be zero. For most cars, the top of the line would fall to the right of the vertical line when looking at the drivers side of the vehicle, meaning that the line would slant toward the rear of the car. This is known as a positive caster.

For the 1994 Chevy S-10 Blazer, the caster angle can range from +1.5 degrees to +2.5 degrees, with the ideal setting being +2.0 degrees and the cross tolerance being +0.5 degrees.

Camber

The camber is the angle that a wheel leans when looked at from the front of a vehicle. If the wheel is perfectly vertical, the camber is zero. If the top of the wheel leans out, away from the engine block, it has a positive camber. If the top of the wheel leans in, toward the engine block, it has a negative camber.

The camber angle on 1994 Chevy S-10 Blazers can range from +0.3 degrees to +1.3 degrees, with the ideal setting being +0.8 degrees and the cross tolerance being +0.5 degrees.

Toe-in

The toe is the angle the wheels of a vehicle are pointed in relation to the centerline of the vehicle. It is rare for a vehicle to be designed so that the wheels are perfectly perpendicular to a vehicles centerline. In most cases, the wheels point slightly toward each other at the front to help relieve pressure on the steering joints and suspension. This is referred to as toe-in.

The toe-in on the 1994 Chevy S-10 Blazer can range from +0.1 degrees to +0.5 degrees, with the ideal setting being +0.3 degrees.

According to the National Highway Traffic Safety Administration (NHTSA), there have been two safety recalls associated with Chevy Blazer fuel problems since 1991. These recalls were initiated because of potentially dangerous defects in the fuel systems of Chevrolet 1991, 1995 and 1996 models.

Reasons for Recalls

On June 17, 1991, General Motors recalled 102,885 1991 vehicles, including Chevy Blazers, because these automobiles were shipped with the fuel tank sender seal out of position. On Nov. 8, 1996, General Motors recalled 432,183 more vehicles, including Chevy Blazers, because the fuel tanks could leak. Per the NHTSA, a fire could result from either fuel problem.

Remedies

In the 1991 recall, authorized dealers replaced sender seals on the affected vehicles. In 1996, dealers installed additional shielding of the fuel tank system without removing or disassembling the fuel system.

Notification and Instructions

Registered vehicle owners should have been notified via mail by General Motors at the times of the recalls. Notifications should have contained instructions on where to bring the vehicles for repair at no cost to the consumer, as required by law. Concerned drivers who were not notified, or who bought vehicles second-hand post-recall, may contact the NHTSA to determine whether their vehicles might have been affected.