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THIS MAY HELP
https://www.manualslib.com/manual/656391/Oldsmobile-Alero-2004.html?page=8

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TECHNICAL SERVICE BULLETINS & wiring diagrams BBB Industries Premium Alternators Starters Power Steering Products

Oldsmobile Alero MAP Sensor - PartsGeek.com

www.partsgeek.com > ... > Oldsmobile MAP Sensor > Alero Parts

Oct 29, 2008 - 04 2004 Oldsmobile Alero GL MAP Sensor 3.4L V6 VIN: E Delphi · Click to Enlarge ... Vehicle, Engine. • 2002 (02) Oldsmobile Alero, 3.4L V6. 04 2004 Oldsmobile Alero MAP Sensor 2.2L 4 Cyl Standard Motor Products.

Part 1 -How to Test the MAP Sensor (GM 2.4L Quad 4)

troubleshootmyvehicle.com > GM > 2.4L

Jun 7, 2011 - GM 2.4L MAP Sensor Test with a Multimeter. ... 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002. Malibu 2.4L. 1997, 1998 ... Alero 2.4L. 1999 .

Hello, Here is the website download site for the repair manual. Oldsmobile alero repair manual

Borrow a repair manual from a libarry to guide you though it,

A defective electronic flasher relay will cause this problem. GM has a problem with these, please read on.
GM
Bulletin No.: 04098A

Date: January 11, 2006

SPECIAL POLICY
Subject:
04098 - Special Policy Adjustment - Turn Signal/Hazard Warning Flashers

Models:
1999-2002 Chevrolet Malibu
1999-2002 Oldsmobile Alero
1999 Oldsmobile Cutlass
1999-2002 Pontiac Grand Am


Supercede:

This bulletin is being revised to include 2001-2002 Chevrolet Malibu, Oldsmobile Alero, and Pontiac Grand Am vehicles. Due to part availability, it is anticipated that customers will not be notified until late April 2006. In the meantime, should a customer bring in a 2001-2002 Chevrolet Malibu, Oldsmobile Alero, or Pontiac Grand Am vehicle because the turn signal/hazard warning flashers are inoperative, repair the vehicle as described in this bulletin and submit the claim using the labor code found in this bulletin.

Please discard all copies of bulletin 04098 issued December 2004.

Condition

Some customers of 1999-2002 Chevrolet Malibu, Oldsmobile Alero, Pontiac Grand Am, and 1999 Oldsmobile Cutlass may have turn signal/hazard flashers that become inoperative.

Special Policy Adjustment

This special policy covers the condition described above for a period of 10 years or 150,000 miles (240,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.

For 1999-2000 vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after December 23, 2004 are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to December 23, 2004 must be submitted to the Service Contract provider.

For 2001-2002 vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after January 11, 2006 are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to January 11, 2006 must be submiffed to the Service Contract provider.

THE WAY I LEARNED WAS GO TO AUTOZONE, OR O'REILLY'S, AND THEY HAVE MANUALS FOR ANY CAR OR TRUCK! LOOK FOR 2002 OLDS ALERO! AND YOU'LL HAVE A REPAIR MANUAL FOR YOUR CAR! EASY TO READ AND UNDERSTAND! USUALLY HAYNES, OR CHILTONS!

Hi there:
most manufactures call for timing belt/chains to be replaced approximately every 75,000 to 100,000 miles.
Timing belt replacement can be very difficult if you don't have much experience in that type of repair for the best step by step instructions it would be best too go and get a repair manual from your local parts distributor i would recommend getting a chilton repair manual.
hope this is helpful for you best of luck too you

BUY A HAYNES REPAIR MANUAL IT HAS ALL ELECTRICAL AND PCM WIRING DIAGRAM.

I suggest that you visit the autozone.com website and register the vehicle. It doesn't cost anything and will give you access to an online repair manual. The steps for replacing the water pump should be available there. Hope this helped and best wishes.