This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
full bulletin at NHTSA ↗2006 Chevrolet Colorado engine problems
moderate 41 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
41
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 41 engine complaints filed for the 2006 Chevrolet Colorado, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 17 model years of Chevrolet Colorado we track for engine problems, this one carries the most owner complaints on file — 41.
Owners have filed 41 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
full bulletin at NHTSA ↗This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
full bulletin at NHTSA ↗This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
full bulletin at NHTSA ↗This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2006 Colorado engine cluster shows a pattern of serious defects. Misfire is the most common complaint—multiple cylinders misfiring with Check Engine codes (P0300, P0017) appearing at 45,000 to 216,000 miles. Owners say GM's own service bulletins and an August 2007 warranty extension (7 years/100,000 miles) confirm GM knew about a cylinder head seal defect, yet many owners never received the notice and got stuck with $3,000–$4,000 head replacement bills after the extended warranty ran out.
Engine stalling without warning is pervasive. Trucks shut down mid-highway, mid-intersection, or while idling, forcing hard restarts or 10-15 minute waits. Some failures link to the PassLock anti-theft system (a known GM issue); others remain undiagnosed despite multiple dealer visits. Dealerships replaced fuel pumps, crankshaft sensors, ignition switches, and sparked software updates—rarely solving the problem permanently.
Reduced-power mode engagement occurs without warning, dropping speed to 20-40 mph with no diagnostic code. One owner reported it escalating from every six months to every two weeks, creating highway hazard.
Camshaft actuator solenoid failure (P0017) causes rough idle and stalling around 60,000-68,000 miles even on regularly serviced trucks. A TSB exists, but GM refuses coverage outside the 36,000-mile bumper-to-bumper window. One owner at 25,000 miles suffered an exhaust valve seizure that fractured the piston—requiring engine replacement.
Start-up delays persist for years post-warranty, with trucks requiring 10-15 minutes to start randomly. No clear root cause emerges across dealer visits.
Same Chevrolet Colorado engine reports on nearby years: 2005 · 2007
Failure modes owners describe
Misfire and cylinder head defect
Multiple cylinders misfiring due to faulty factory cylinder head seals, gaskets, or internal defects. Owners report GM issued a TSB and extended warranty (7 years/100k miles) for 2006 Colorado owners but many did not receive notice. Cylinder head replacement typically required.
When: Typically 45,000–216,000 miles; some at 25,000 miles; several incidents around 6–7 years of ownership
Symptoms owners cite: Check Engine light on intermittently or constantly; Rough idle; Loss of power or hesitation; Engine shaking or vibration; Multiple misfire codes (P0300 and cylinder-specific codes)
Codes mentioned: P0300, P0017, P0014
Repairs/costs cited: $3,000–$4,000 cylinder head replacement; owners cite new seals, bolts, head gasket, and valve work
Recalls/TSBs owners mention: GM issued August 2007 letter extending warranty to 7 years/100k miles for cylinder head misfire issue; GM acknowledges defect via TSB but does not cover repairs after warranty expires or if owner did not receive notice
Engine stalling without warning
Engine cuts out completely while driving at various speeds with no prior warning. Many occur on highways or intersections, creating hazardous conditions. Restart may require several attempts or waiting 5–15 minutes. Some stalls related to PassLock anti-theft system failures; others remain undiagnosed despite multiple dealer visits.
When: Throughout ownership; 24,000–109,000+ miles; occurs intermittently and unpredictably
Symptoms owners cite: Complete engine shutdown while in motion; Requires waiting or multiple restart attempts; Check Engine and/or Power Reduced lights may illuminate; No pattern or warning
Codes mentioned:
Repairs/costs cited: Dealers have replaced fuel pump, spark plugs, crankshaft sensor, ignition switch, intake boot, and fuel cap with no permanent fix in most cases; some attributed to software/computer issues with no resolution
Reduced Power mode engagement
Truck enters reduced power mode without warning while driving, dropping speed to 20–40 mph and sounding chime alarm. No Check Engine code may appear. Frequency escalates over time. Owners report multiple dealer attempts (battery replacement, sensor replacement, software updates) without identifying root cause.
When: Began immediately after purchase; initially every 6 months, escalating to every 2–3 weeks by reporting time; incidents on freeway and interstate
Symptoms owners cite: Chime alerts; Involuntary speed reduction to 20–40 mph; Loss of throttle control; No visible warning light or diagnostic code
Codes mentioned:
Repairs/costs cited: Dealers replaced accelerator pedal sensor, battery, attempted software updates; no permanent resolution achieved
Camshaft actuator solenoid and position sensor failure
Camshaft position actuator solenoid fails with filtering screen dislodging from component, affecting engine timing. Causes rough idle, stalling, and loss of power. TSB exists for this issue. Repair cost ~$1,200 for actuator replacement; sensor replacement may be attempted first but does not resolve underlying defect.
When: 60,000–68,000 miles on vehicles with regular scheduled service
Symptoms owners cite: Rough idle; Stalling; Loss of power or hesitation; Check Engine light; Engine timing issues
Codes mentioned: P0017
Repairs/costs cited: $1,200 actuator replacement after initial solenoid swap fails; GM refuses coverage outside 3-year/36k-mile bumper-to-bumper warranty
Recalls/TSBs owners mention: GM has issued TSB for this defect; coverage limited to bumper-to-bumper warranty (36,000 miles/3 years)
PassLock anti-theft system malfunction
PassLock security system fails, preventing engine start or causing unexpected shutdown while driving. Anti-theft light flashes on dashboard; engine cuts off mid-operation. System resets after 10–15 minutes waiting. Owners note this is a known GM issue that affected other models with recalls, but no Colorado recall issued.
When: Throughout ownership; stalls occur at traffic lights, turns, and while in motion
Symptoms owners cite: Anti-theft light flashing; Engine shutdown while driving or at idle; Vehicle will not crank; Extended restart delay (10–15 minutes); Resets itself after waiting
Codes mentioned:
Repairs/costs cited: Dealers have replaced crank sensor and ignition switch without permanent resolution; issue persists
Recalls/TSBs owners mention: None documented; owners note similar issues recalled in other GM models but not Colorado
Valve seat and exhaust valve defect
Exhaust valve sticks or valve seat fails. In one case, exhaust valve stuck down while piston moved up, fracturing piston and valve at only 25,000 miles. Leads to loss of compression and engine noise. May require engine replacement.
When: Early in vehicle life (25,000 miles reported)
Symptoms owners cite: Loss of compression on affected cylinder; Very loud engine noise; Check Engine light; Rough running
Codes mentioned:
Repairs/costs cited: One owner received engine replacement from GM; repair likely requires engine replacement or major rebuild
Recalls/TSBs owners mention: One case: GM sent replacement engine
Engine hesitation and power loss under acceleration
Vehicle hesitates, sputters, or loses power when accelerating. Accompanied by Check Engine light. Rough idle common. Some dealers attribute to carbon buildup on valves; others cite fuel injection or head defects. Multiple repair attempts often unsuccessful.
When: 45,000+ miles; varies throughout ownership
Symptoms owners cite: Hesitation or stuttering on acceleration; Rough idle; Loss of power; Check Engine light; Sputtering
Codes mentioned: P0300
Repairs/costs cited: Fuel treatment suggested by some dealers; eventual head replacement usually recommended; many repairs attempted with no permanent fix
Start-up delay and intermittent no-start condition
Truck cranks but will not start, requiring 10–15 minute wait before engine fires. Occurs randomly, up to once per week. Check Engine light does not illuminate. Persist after fuel system service, air filter replacement, and other work.
When: Random throughout ownership; some ongoing 5+ years without resolution
Symptoms owners cite: Engine cranks but does not start; No Check Engine light; Random occurrence; Resolves after waiting 10–15 minutes
Codes mentioned:
Repairs/costs cited: Dealership replaced air element, installed fuel system power pack, cleaned injection system in 2010 under warranty but did not resolve; problem continues post-warranty
Synthesized from 41 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
Tl*the contact owns a 2006 Chevrolet colorado. While driving approximately between 10-15 MPH, the engine completely stalled due to electrical failure. The engine restarted after the contact waited five to ten minutes. The failure occurred four different times. The vehicle was taken to an independent mechanic and a diagnostic testing was performed twice which detected no trouble codes. The failure…
Like all the other reports and complaints I have read online about this type of vehicle. I have the same problem with my 2006 Chevy colorado. I bought the truck 4 years ago almost brand new and I'm still paying for it but can't move it because it would not pass the state emissions test. I have spent about $1,000 trying to fix my truck, buying parts and replacing them because the check engine…
Tl* the contact owns a 2006 Chevrolet colorado. The contact stated that while driving 35 MPH, the vehicle stalled without any warning and failed to restart. The failure recurred twice. The vehicle was not taken to a dealer or independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 24,306.
Tl* the contact owns a 2006 Chevrolet colorado. The contact stated that the engine was a 4 cylinder 2.8 engine and would cause the vehicle to drive abnormally. The contact stated that the number 4 valve was sticking. The dealer diagnosed that the engine would need replacing. The engine was replaced by the dealer numerous times, but the failure continuosuly recurred. The dealer also rebuilt…
Had engine trouble with your 2006 Chevrolet Colorado?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2006 Chevrolet Colorado?
It's a documented issue but not catastrophic. 41 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 37 complaints that reported odometer mileage, most engine failures cluster between 29,000 and 100,000 miles, with the median around 61,000. A quarter of owners report trouble before 29,000; a quarter make it past 100,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2006/Chevrolet/Colorado.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.