Chevrolet · Known Issues

2006 Chevrolet Tahoe Problems: 10 Issues Every Owner Should Know

2006 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated July 2026

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2006 Chevrolet Tahoe has 10 documented known issues, with 3 rated critical. The most serious are In-Tank Fuel Pump Module Failure (Long Crank / No-Start) ($400-$800 repair), 4L60E Automatic Transmission 3-4 Clutch Failure (Loss of 3rd/4th Gear) ($1,800-$3,500 repair) and 'Reduced Engine Power' Limp Mode - Electronic Throttle (TAC) System ($120-$450 repair). Across all issues with published estimates, repair costs range from $50 to $3,500. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Chevrolet Tahoe problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2006 Chevrolet Tahoe has 10 documented issues. The most frequently reported are: In-Tank Fuel Pump Module Failure (Long Crank / No-Start), 4L60E Automatic Transmission 3-4 Clutch Failure (Loss of 3rd/4th Gear), 'Reduced Engine Power' Limp Mode - Electronic Throttle (TAC) System. Of these, 3 are rated critical and should be addressed promptly.

Is the Chevrolet Tahoe reliable?

The 2006 Chevrolet Tahoe has 10 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 3 issues are rated critical: In-Tank Fuel Pump Module Failure (Long Crank / No-Start) and 4L60E Automatic Transmission 3-4 Clutch Failure (Loss of 3rd/4th Gear) and 'Reduced Engine Power' Limp Mode - Electronic Throttle (TAC) System. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Chevrolet Tahoe problems?

Repair costs for known Chevrolet Tahoe issues range from $50 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, In-Tank Fuel Pump Module Failure (Long Crank / No-Start), typically costs $400-$800 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2000-2006 Chevrolet Tahoe In-Tank Fuel Pump Module Failure (Long Crank / No-Start)?

The GMT800 Tahoe's in-tank electric fuel pump module is a common high-mileage failure. As the pump wears it struggles to build and hold the ~58-62 PSI these returnless systems need, producing extended cranking (worst after the truck sits overnight), stalling, hesitation under loa… Repairs typically run $400-$800. Severity: high.

What is the 1995-2010 Chevrolet Tahoe 4L60E Automatic Transmission 3-4 Clutch Failure (Loss of 3rd/4th Gear)?

The 4L60E 4-speed automatic behind the Vortec V8s is the single most common major failure on high-mileage Tahoes. The 3-4 clutch pack is the known weak point: its friction plates burn up, and the truck suddenly slips or drops out of 3rd and 4th gear (RPMs flare with no accelerati… Repairs typically run $1,800-$3,500. Severity: high.

What is the 2000-2010 Chevrolet Tahoe 'Reduced Engine Power' Limp Mode - Electronic Throttle (TAC) System?

Tahoes with drive-by-wire throttle (APP pedal sensor + TAC module + electronic throttle body) commonly trigger a 'Reduced Engine Power' message and drop into limp mode with severely limited acceleration - a safety concern in traffic. On GMT800s the frequent culprits are a broken/… Repairs typically run $120-$450. Severity: high.

What is the 1996-2007 Chevrolet Tahoe Lower Intake Manifold Gasket Coolant Leak (Dex-Cool Erosion)?

Vortec V8 Tahoes are well known for lower intake manifold gasket leaks, most often at the driver-side rear corner coolant passages. Dex-Cool (orange) coolant is hard on these gaskets, softening/distorting them and eroding the aluminum sealing surface, allowing coolant to weep ext… Repairs typically run $700-$1,100. Severity: medium.

What is the 2003-2006 Chevrolet Tahoe Instrument Cluster Stepper Motor Failure?

The 2003-2006 Tahoe has the same instrument cluster gauge failure as all GMT800 GM trucks. The stepper motors driving speedometer, tach, fuel, and temp gauges fail from thermal cycling. Gauges read incorrectly, stick, or go dead. Repairs typically run $50-$350. Severity: medium.

What is the 2000-2006 Chevrolet Tahoe EBCM / ABS Module Failure & Corroded Ground (ABS, Traction, StabiliTrak Lights)?

GMT800 Tahoes commonly light the ABS, Traction Control and (on later trucks) StabiliTrak warnings simultaneously due to the Electronic Brake Control Module (EBCM) or, very often, its corroded frame-mounted ground. The dedicated EBCM ground on the driver-side frame rail is exposed… Repairs typically run $100-$700. Severity: medium.

What is the 2000-2006 Chevrolet Tahoe Worn Steering Gearbox - Sector Shaft Play & Seal Leak (Loose/Wandering Steering)?

The recirculating-ball steering gearbox on GMT800 Tahoes becomes notoriously sloppy with mileage. Internal wear of the worm/sector gear and bearings produces excessive on-center steering play, vague/wandering tracking at highway speed, and a clunk, while the sector-shaft (pitman)… Repairs typically run $300-$650. Severity: medium.

What is the 2000-2006 Chevrolet Tahoe Upper Intermediate Steering Shaft Clunk (I-Shaft)?

The upper intermediate steering shaft (I-shaft) between the steering column and the gearbox develops dry, corroded splines that bind and then slip, producing a clunk or knock felt in the steering wheel when turning at low speed or driving over bumps. GM issued TSB 00-02-35-003M a… Repairs typically run $120-$450. Severity: medium.

What is the 2000-2010 Chevrolet Tahoe Blower Motor Resistor Failure (Heater/AC Fan Only Works on High)?

On manual-A/C Tahoes the blower motor resistor (that controls fan speeds 1-4) is a very common failure. Classic symptom: the fan works only on the highest setting (High bypasses the resistor) while the lower speeds are dead; sometimes all speeds quit, and a burning-plastic smell… Repairs typically run $50-$200. Severity: low.

What is the 2000-2010 Chevrolet Tahoe Knock Sensor Corrosion / Water Intrusion Under Intake (P0327 & P0332)?

On Gen III/IV small-block V8s the two knock sensors sit down in a recessed valley UNDER the intake manifold. Water (rain, car washes, snow melt) collects in the recess and corrodes the sensors and their two-wire harness, setting P0327 (Bank 1 low) and/or P0332 (Bank 2 low), often… Repairs typically run $250-$650. Severity: low.

All 10 Known Issues

2000-2010 Chevrolet Tahoe: 'Reduced Engine Power' Limp Mode - Electronic Throttle (TAC) System#

2000-2010 Chevrolet Tahoe: Knock Sensor Corrosion / Water Intrusion Under Intake (P0327 & P0332)#

2000-2006 Chevrolet Tahoe: In-Tank Fuel Pump Module Failure (Long Crank / No-Start)#

1995-2010 Chevrolet Tahoe: 4L60E Automatic Transmission 3-4 Clutch Failure (Loss of 3rd/4th Gear)#

2000-2006 Chevrolet Tahoe: Worn Steering Gearbox - Sector Shaft Play & Seal Leak (Loose/Wandering Steering)#

2000-2006 Chevrolet Tahoe: Upper Intermediate Steering Shaft Clunk (I-Shaft)#

1996-2007 Chevrolet Tahoe: Lower Intake Manifold Gasket Coolant Leak (Dex-Cool Erosion)#

2003-2006 Chevrolet Tahoe: Instrument Cluster Stepper Motor Failure#

2000-2006 Chevrolet Tahoe: EBCM / ABS Module Failure & Corroded Ground (ABS, Traction, StabiliTrak Lights)#

2000-2010 Chevrolet Tahoe: Blower Motor Resistor Failure (Heater/AC Fan Only Works on High)#

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