2002-2006 Chevrolet Avalanche: Reliability
Updated: 11/23/08
2006 Chevrolet Avalanche
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2002-2006 Chevrolet Avalanche ▼
- Price Range: $7,400 - $20,200
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Our reliability study for this generation Chevrolet Avalanche includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Chevrolet Avalanche .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Blower motor:
Blower may not operate or may run on with key off requiring revised blower motor control module. (2003-05)
Engine knock:
The engine (4.8L, 5.3L, or 6.0L) may knock for up to 30 seconds after a cold start. GM says this may be due to carbon buildup and is reportedly not harmful to the engine. (2002)
Engine noise:
Some of the rocker-arm bearings may fail. The first indication may be needle bearings found in the oil when it is drained. All 16 rocker arms should be replaced. (2002)
Engine noise:
Due to corrosion of the knock sensor on the rear bank, the 5.7-litre engine may suffer from spark knock (ping) that gets worse on hard acceleration, illuminating the "check engineÓ light. (2002)
Transmission slippage:
The transmission may slip or there may be no 3rd or 4th gear (possibly accompanied by illumination of the "check engineÓ light) due to plugging of one of the shift solenoid valves. (2002)
Water leak:
A water leak at the rear corner of the cargo box requires resealing of the catch cup. (2002)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $390 |
| Alternator | $325 |
| Automatic Transmission or Transaxle | $1,315 |
| Brakes | $475 |
| Constant Velocity Joints | $890 |
| Exhaust System | $455 |
| Radiator | $555 |
| Shocks and/or Struts | $665 |
| Timing Chain or Belt | $610 |








